"CIRO Scenic View of Elephant Rock" by Wallace Keck , public domain
City of Rocks
National Reserve - Idaho
The City of Rocks National Reserve, also known as the Silent City of Rocks, is a United States National Reserve and state park lying 2 miles (3.2 km) north of the south central Idaho border with Utah. It is widely known for its excellent rock climbing and rock formations.
The rock spires in the City of Rocks and adjacent Castle Rocks State Park are largely composed of granitic rock of the Oligocene Almo pluton and Archean Green Creek Complex.
California Trail wagon trains of the 1840s and 1850s left the Raft River valley and traveled through the area and over Granite Pass into Nevada. Names or initials of emigrants written in axle grease are still visible on Register Rock. Ruts from wagon wheels also can be seen in some of the rocks.
Motor Vehicle Use Map (MVUM) of the Eastern Part - Albion, Black Pine, Raft River & Sublett Divisions - of Minidoka Ranger District in Sawtooth National Forest (NF) in Idaho and Utah. Published by the U.S. Forest Service (USFS).
Brochure about the California National Historic Trail (NHT) at City of Rocks National Reserve (NRES) in Idaho. Published by the National Park Service (NPS).
Brochure about Geologic and Historic Sites at City of Rocks National Reserve (NRES) in Idaho. Published by the National Park Service (NPS).
https://www.nps.gov/ciro/index.htm
https://en.wikipedia.org/wiki/City_of_Rocks_National_Reserve
The City of Rocks National Reserve, also known as the Silent City of Rocks, is a United States National Reserve and state park lying 2 miles (3.2 km) north of the south central Idaho border with Utah. It is widely known for its excellent rock climbing and rock formations.
The rock spires in the City of Rocks and adjacent Castle Rocks State Park are largely composed of granitic rock of the Oligocene Almo pluton and Archean Green Creek Complex.
California Trail wagon trains of the 1840s and 1850s left the Raft River valley and traveled through the area and over Granite Pass into Nevada. Names or initials of emigrants written in axle grease are still visible on Register Rock. Ruts from wagon wheels also can be seen in some of the rocks.
Emigrants of the California Trail describe the rocks here in vivid detail as "a city of tall spires,” “steeple rocks," and "the silent city." Today, this backcountry byway attracts rock climbers, campers, hikers, hunters, and those with the spirit of adventure. There's inspirational scenery, exceptional opportunities for geologic study, and remnants of the Old West awaiting your discovery.
From Boise: take I-84 East to exit 216 (Declo); go south on Highway 77 to Conner Creek Junction; turn right (west) on Highway 77 Spur to Almo. The visitor center and the park entrance are south of the post office and businesses. From Pocatello: take I-86 West to I-84 West to exit 216 and proceed as above. From Salt Lake City: take I-84 west to exit 245 (Sublette), turn left and go west to Malta. From Malta take Highway 77. Take Highway 77 Spur to Almo.
City of Rocks Visitor Center
The Visitor Center for City of Rocks National Reserve and Castle Rocks State Park is located just outside the National Reserve in the community of Almo. Stop in to chat with a Ranger or pick up maps, guide booklets, and other informative resources. We also offer souvenirs such as books, mugs, apparel, postcards, and stickers.
The Visitor Center is located 2 miles east of the Reserve in the small community of Almo. The visitor center is directly south of the post office and most businesses.
City of Rocks Campground
Camping in City of Rocks is a great way to enjoy being out in nature. Relax beneath the cool shade of aspen, juniper, mountain mahogany, or pine. Spend the night surrounded by impressive granite formations and starry skies. There are 64 standard campsites and 3 group sites to choose from with easy access to climbing, hiking trails, and vistas.
Campsite Fee
14.00
8 people, 2 tents, and 2 vehicles per site. All equipment must fit within the designated camping area. All campsites have a fire-ring/ground grill and a picnic table.
Reservation fee is $10. This fee does not apply for walk-ins paying by envelope or in person at the Visitor Center.
Group Campsite Fee
36.00
$3 per person, 12 person minimum ($36 minimum)
$10 reservation fee.
The reservation fee does not apply for walk-ins paying by envelope or in person at the Visitor Center.
Camping Under the Milky Way
An orange tent glows in early pre-dawn beneath the milky way in a star filled sky.
The dark skies in City of Rocks provide excellent conditions for star gazing.
City of Rocks Camping 01
A blue tent is nestled in shade of mountain mahogany
Camping among the rocks is popular
City of Rocks Camping 02
A camp trailer is parked with granite rocks behind
Some campsites are suitable for small RV campers
City of Rocks Camping 03
Numerous tents are set up below granite rocks
City of Rocks offers group camping areas
Smoky Mountain Campground
There are 38 campsites available, 9 of which are pull-through. Sites 11 and 24 are designated ADA accessible. A separate loop with 6 sites accommodates equestrian campers. - water service May-September - 30 amp electrical hook-ups - fire-ring/ground grill - picnic table - partial shade There are flush toilets and showers open May-September and a vault toilet open year-round at the equestrian trail head. An RV dump station is provided near the campground entrance.
Idaho Resident Campsite Fee
28.00
An additional $10 fee is applied for advanced reservations. This fee does not apply to walk-ins.
Water typically available May1st through September 30th depending on weather.
Each vehicle must pay an entrance fee of $7 or have an Annual Pass or Passport.
Motor Vehicle Entrance Fee
7.00
All vehicles are required to pay a motor vehicle entrance fee or have an Annual Pass or Passport.
Campsite Reservation Fee
10.00
This fee is required to make campsite reservations in advance and does not apply to walk-ins.
Shower Fee
3.00
fee is per shower
Non-Idaho Resident Campsite Fee
31.00
An additional $10 fee is applied for advanced reservations. This fee does not apply to walk-ins.
Water typically available May1st through September 30th depending on weather.
Each vehicle must pay an entrance fee of $7 or have an Annual Pass or Passport.
Smoky Mountain Campsite
A family is gathered around a blazing campfire in the evening.
Smoky Mountain Campsite
Orange tents, fire ring, and picnic table, in a campsite at Smoky Mountain Campground.
Smoky Mountain Campsite
A truck with an Airstream trailer on a paved pad with mountains in the background.
City of Rocks Granite
Snow dusted granite formations jut up from a mountainous juniper covered landscape.
Explore the City
City of Rocks
3 silhouetted foggy granite formations highlighted by golden sunlight.
City of Rocks offers sweeping vistas and awe-inspiring scenery.
Indian Grove Overlook
Grand scenic view looking down from a high elevation. Granite spires jut up from the landscape.
The majority of outcrops in City of Rocks and all of the pinnacles are either Almo Pluton or Green Creek Complex granite.
Twin Sisters
Two granite pinnacles right next to each other that are similar in size and shape.
Twin Sisters may be similar in size and shape, but one is 2.5 billion years old, the younger sister is only 28 million years old.
Window Arch at City of Rocks
A granite arch is displayed on the horizon
Forces of nature sculpt unexpected features in granite such as Window Arch
Replica Emigrant Wagons at City of Rocks
Replica emigrant wagons rest unhitched at sunrise
Nearly 250,000 California-bound emigrants traveled through City of Rocks (1843-1882)
Emigrant Signatures at City of Rocks
Emigrant signature written with axle-grease on granite
California-bound emigrants painted their signature on Register Rock in 1850
Climber on Morning Glory Spire
A climber ascends a granite spire with mountains in the distance.
Over half of the 100,000 annual visitors to City of Rocks come to experience climbing
Window Arch
Granite arch with sunset peeking through.
Window Arch is one of many impressive rock features found in City of Rocks.
Silent City of Rocks
Snowy granite pinnacles.
Winter is a great time to experience quiet and solitude in City of Rocks.
NPS Geodiversity Atlas—City Of Rocks National Reserve, Idaho
Each park-specific page in the NPS Geodiversity Atlas provides basic information on the significant geologic features and processes occurring in the park. Links to products from Baseline Geologic and Soil Resources Inventories provide access to maps and reports.
large granite outcrops
Wildland Fire in Douglas Fir: Western United States
Douglas fir is widely distributed throughout the western United States, as well as southern British Columbia and northern Mexico. Douglas fir is able to survive without fire, its abundantly-produced seeds are lightweight and winged, allowing the wind to carry them to new locations where seedlings can be established.
Close-up of Douglas fir bark and needles.
Wildland Fire in Sagebrush
Sagebrush will burn when the surrounding grasses are dry. With strong winds, fire spreads rapidly with flames sometimes reaching over 30 feet high. While fire easily kills sagebrush, the other plants resprout from protected roots producing lush forage for wildlife and livestock.
Close-up of sagebrush leaves
Explore Your Southern Idaho National Parks
Discover southern Idaho's hidden treasures, including Craters of the Moon National Monument and Preserve, City of Rocks National Reserve, Minidoka National Historic Site, and Hagerman Fossil Beds National Monument.
A group of people joyfully cut the ceremonial ribbon outside the new Minidoka visitor center.
Visiting City of Rocks National Reserve
With its unique granite formations and stunning scenery, City of Rocks National Reserve in southern Idaho offers a multitude of opportunities for hiking, camping, climbing, and more.
Cool Geology Hike in Castle Rocks
Join Ranger Tara as she takes you to see some awesome geologic features in Castle Rocks.
Panhole in granite feature at Three Pools Boulder.
Two Different Types of Granite
Learn about the two different types of granite in City of Rocks.
Dark gray granite with large white crystals.
City of Rocks Junior Ranger Online
Learn about City of Rocks National Reserve and Castle Rocks State Park.
Field of wildflowers in front of Castle Rocks State Park in Almo, ID.
Searching for a Rare Wildflower
Follow along as the Park Superintendent looks for the rare Steer's head Wildflower.
Two Steer's head Wildflowers
Geology Word Search
Junior Ranger Geology Word Search Activity
Geology Word Search
The Parts of a Flower
Ranger Kate dissects a daffodil and explains the different parts of the flower.
A yellow daffodil flower.
Series: Geologic Time Periods in the Cenozoic Era
The Cenozoic Era (66 million years ago [MYA] through today) is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age woolly mammoths.
fossils on display at a visitor center
Paleogene Period—66.0 to 23.0 MYA
Colorful Paleogene rocks are exposed in the hoodoos of Bryce Canyon National Park and the badlands of Badlands and Theodore Roosevelt national parks. Extraordinary Paleogene fossils are found in Fossil Butte and John Day Fossil Beds national monuments, among other parks.
fossil skull with teeth expsoed
Cenozoic Era
The Cenozoic Era (66 million years ago [MYA] through today) is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age woolly mammoths.
fossils on display in a visitor center
Scientist Profile: Tom Rodhouse, Ecologist and Project Manager
Meet Tom Rodhouse, ecologist for the Upper Columbia Basin Network. Tom studies the plants and animals of our National Parks, and believes we have an important role to play in protecting these special places. Read about his adventures as a field wildlife biologist, and how he got to be where he is today.
Biologist smiles by sweeping view of green fields, conifer treetops, and snow-capped mountains.
City of Rocks - TOP 10 TIPS
Get the most from your City of Rocks visit by using our Top 10 Tips!
Granite spires in a dramatic mountainous landscape.
City of Rocks Wildlife
At first glance, City of Rocks might seem like it would be a tough place for wildlife to survive, but there are many different types of habitats that allow this area to burst with life. Check out this fascinating glimpse into the diverse animal lives that intersect at this little oasis. Watch till the end to see our largest carnivore! Can you name all 11 species in this video?
A moose walking along the bank next to a pond.
Margaret Frink
Margaret Frink, who joined the Californian Gold Rush in the mid-nineteenth century, provides a glimpse of what life was like on the journey west through her meticulously kept diary.
A black and white photo of Margaret Frink from the chest up as she looks off to the side.
Studying the Past and Predicting the Future Using Rat Nests
In the western United States, packrat middens are one of the best tools for reconstructing recent environments and climates. These accumulations of plant fragments, small vertebrate remains, rodent droppings, and other fossils can be preserved for more than 50,000 years. Packrat middens have been found in at least 41 National Park Service units.
Photo of a wood rat.
Series: Park Paleontology News - Vol. 14, No. 2, Fall 2022
All across the park system, scientists, rangers, and interpreters are engaged in the important work of studying, protecting, and sharing our rich fossil heritage. <a href="https://www.nps.gov/subjects/fossils/newsletters.htm">Park Paleontology news</a> provides a close up look at the important work of caring for these irreplaceable resources. <ul><li>Contribute to Park Paleontology News by contacting the <a href="https://www.nps.gov/common/utilities/sendmail/sendemail.cfm?o=5D8CD5B898DDBB8387BA1DBBFD02A8AE4FBD489F4FF88B9049&r=/subjects/geoscientistsinparks/photo-galleries.htm">newsletter editor</a></li><li>Learn more about <a href="https://www.nps.gov/subjects/fossils/">Fossils & Paleontology</a> </li><li>Celebrate <a href="https://www.nps.gov/subjects/fossilday/">National Fossil Day</a> with events across the nation</li></ul>
Photo of a person sitting while using a laboratory microscope.
Series: Geologic Time—Major Divisions and NPS Fossils
The National Park System contains a magnificent record of geologic time because rocks from each period of the geologic time scale are preserved in park landscapes. The geologic time scale is divided into four large periods of time—the Cenozoic Era, Mesozoic Era, Paleozoic Era, and The Precambrian.
photo of desert landscape with a petrified wood log on the surface
Series: Women's History in the Pacific West - Columbia-Pacific Northwest Collection
Biographies of women from parks in Washington, Oregon Idaho and far western Montana
Map of Washington, Oregon and Idaho
NPS Establishes NPSage Initiative to Restore Sagebrush-Steppe Ecosystems
Artemisia species, commonly known as sagebrush, are far from being the only species on the landscape. The sagebrush biome is composed of a rich mosaic of thousands of diverse plant species, which are largely driven by differences in climate, soil and elevation. These distinct sagebrush plant and animal communities occur in approximately 70 park units across the western U.S— all of which are experiencing significant threats from wildfire and droughts.
Two NPS staff knealing next to plants growing in a nursery
Updated Species Database Will Help Boost Amphibian Conservation Across the National Park Service
To steward amphibians effectively, managers need basic information about which species live in parks. But species lists need constant maintenance to remain accurate. Due to recent efforts, the National Park Service now has an up-to-date amphibian species checklist for almost 300 parks. This information can serve as the basis for innumerable conservation efforts across the nation.
A toad sits on red sand, looking into the camera.
Series: Home and Homelands Exhibition: Work
What does it take to build a home? These women lived and breathed hard work, building their homes in difficult circumstances. Several were settlers who benefitted from stolen Indigenous lands. Some shared their knowledge of the land. They all had pride in their work. They all put their hands in the soil to claim resources and build homes. Whether wielding a kapa beater to create cloth or planting a tree to sustain a family for generations, these women created futures for their communities.
Thick white paper peeled back to reveal collage of women.
Clara Campbell’s Perfume Bottle
In popular imagination, women homesteaders are either passively following their husband westward or are breaking boundaries and gaining independence. Clara Campbell does not fit neatly into these archetypes. As a divorced mother, Clara moved to Idaho to try her hand at homesteading in dry, difficult conditions. The image of Clara in her log cabin applying perfume from a glass bottle captures the complexity women faced when making homes in the West.
Small glass bottle with enscription sits on acrylic stand.
Project Profile: Resilient Sagebrush Ecosystems (NPSage)
The National Park Service will expand NPSage collaborative ecosystem restoration projects and integrate climate vulnerability planning and resiliency enhancement actions in parks across Oregon, Washington, Idaho, Montana, Wyoming, Nevada, Colorado, Northern California, and Arizona.
Bucket of seeds
Automobile Tour
The tour starts at the Visitor Center, located in Almo, Idaho. It is approximately 24 miles long
and you should allow about 1.5 - 2.5 hours. Travel is on gravel roads that vary in condition
from place to place and throughout the year. You can check on the latest road and weather
conditions at the Visitor Center. We recommend that you set your trip odometer to zero at the
start of the tour at the Visitor Center's parking lot.
_______________________________________________________________________
Mile 0.0-Visitor's Center Parking Lot (Elevation 5,400 ft)
There are two wayside exhibits at the east edge of the Visitor Center parking lot. These waysides
provide information about the emigrants traveling across the Almo Valley. California and Oregon
bound emigrants shared the Oregon Trail until they reached the "parting of the ways" just after
crossing the Raft River. The Oregon bound emigrants stayed along a more northerly route and the
emigrants that chose Califorina as their destination headed soughtwest along the Raft River. When
the emigrants reached Cassia Creek and the north end of the Jim Sage Mountains they stayed on
the west side of the mountains and headed through the Elba valley and then the Almo valley. The
trail roughly follows the course of the State Route 77 Spur of the City of Rocks Scenic Byway.
In addition to the main stem of the California Trail, the route of the Salt Lake Alternate is visible in
the distance. The route of the Salt Lake Alternate comes through the "narrows", a gap in the
mountains to the east and meets up with the California Trail at the southern end of the Reserve. The
dust clouds from the wagons on the California Trail were visible to emigrants on the Salt Lake
Alternae and vice versa.
There are two replica wagons near the waysides on display each year from April - November,
depending on weather conditions. Please do not climb on the wagons.
To continue the tour, turn left (south) from the Visitor Center parking lot.
Mile 0.4 - Intersection
The City of Rocks Scenic Byway continues to the right on City of Rocks Road.
There is a California Trail marker at the intersection - Marker C-7
"We enter a gorge of the hills which in a short time brings into a large ampitheatre surrounded
with rock of every kind of fanciful character." - Joseph Middleton, Aug 26, 1849.
Mile 2.4 - Almo Entrance
The City of Rocks is part of the National Park System. Congress established the reserve in 1988 as
one of the nation's four national reserves. By its establishment, Congress recognized the character
of this place; it's history, scenery, and natural wonders that had been forgotten. Congress mandated
cooperative protection, preservation, and management of this special place.
The reserve is made up of land owned by the federal government, state government, and private
individuals, and is made up of 14,407 acres. The reserve contains some 450 plant species, 115 bird
species, 14 reptile species, and 55 mammal species. The largest pinyon pine forest in Idaho is
located within the reserve.
Mile 2.6 Circle - Creek Overlook Road
This one lane road to the right winds through pinyon pines to a viewpoint which overlooks the raft
River Valley. Several mountain ranges including the Bear River Range of the Wasatch Front (120
miles) are visible on a clear day. This parking area has a bathroom and serves as the trailhead for
the Geological Interpretive Trail (1.2 miles round trip). A booklet explaining the features on the
Geological Interpretive Trail is available at the Visitor Center. The Circle Creek basin was an
overnight camp site for the emigrants on the California Trail.
Mile 3.1 - Circle Creek Ranch
In 1882, Iowa farmer George W. Lunsford withdrew 160 acres under the 1862 Homestead Act,
receiving a patent to his land in 1888. Lunsford sold his land to William Tracy in 1901. This parcel,
plus 160 adjacent acres, patented by Mary Ann Tracy, under the Desert Land Act, formed the
nucleus of the Circle Creek Ranch.
The Tracy's spent years constructing a substantial stone house to replace their log dwelling. The
stone used in the construction of the home is from a quarry located about one mile southwest of the
home site. The home burned in 1957.
The California Trail crossed the road at this point.
Mile 3.4 -Circle Creek Basin
It was approximately at this point that the emigrants had their first glimpse of City of Rocks. The
main part of the City is made up of a dome of granitic rock known as the Almo Pluton. This granitic
rock is light in color and is represented by the rocks that you see in the valley ahead.
Approximately 28 million years ago, this younger granite intruded into the much older Green Creek
Complex (2 - 3 billion years old). The Green Creek Complex makes up the brownish formations that
you see. This older rock is of Precambrian origin, and contains some of the oldest exposed rock on
the North American Continent.
In the high areas surrounding the City, you can also see
California National Historic Trail
City of Rocks National Reserve
A self-guided journey to discovering
the California National Historic Trail at City of Rocks
City of Rocks National Reserve is a partnership
between the National Park Service and the
Idaho Department of Parks and Recreation
California National Historic Trail
City of Rocks National Reserve
A self-guided journey to discovering
A self-guided journey to discovering
the California National Historic Trail at City of Rocks
Prepared by
Idaho Department of Parks and Recreation
and the
National Park Service
City of Rocks National Reserve
PO Box 169
Almo, Idaho 83312
http://parksandrecreation.idaho.gov
www.nps.gov/ciro
2015
Contents
What’s in store before you explore? There are eight stops, six of
which have interpretive signage, along the 10 mile auto route.
Introduction
Map—Overview
Parting of the Ways to the Elba Basin
The Almo Valley
Twin Sisters in the Distance
The Salt Lake Alternate
Replica Wagons
Wagon Trains
Camp
Guide Books
Trails West Markers
Entrance to City of Rocks
Trail Ruts
First View of Circle Creek Basin
Tracy Homestead
Camp Rock
Treasure Rock
Map— Locations of the Waysides and Markers
Artists on the Trail
Register Rock
Pinnacle Pass
Ledyard and Margaret Ann Alsip Frink
Twin Sisters
Salt Lake Alternate-Boise Kelton Stage Route
Post Office
Granite Pass
The Mormon Battalion
Life on the Trail
Emigrant and Native American Interactions
Trouble on the Trail
Emigrant Names
For Further Study / Credits
Bibliography
2
3
4
5
6
7
8
9
10
11
12
12
13
14
15
16
17
20
21
23
24
27
29
30
32
33
34
35
36
38
39
40
41
42
Introduction
City of Rocks National Reserve (Reserve) was established by
Congress on November 18, 1988 in order to preserve and
protect the significant historical and cultural resources; to
manage recreational use; to protect and maintain scenic quality;
and to interpret the nationally significant values of the Reserve.
The primary significance of the Reserve is the California National
Historic Trail and its associated features. These features include
the wagon ruts and granite monoliths with signatures as well as
the open landscape.
This booklet provides information about the California National
Historic Trail from Connor Junction at the north end of the Jim
Sage Mountains where the California Trail enters the Elba
Basin and follows the trail south through the Almo Valley and
present day Almo before turning west through the City of Rocks
and then continuing west over Granite Pass.
Over 240,000 people traveled the California Trail between 18431882 with the heaviest traffic occurring in the years between
1849, the beginning of the Gold Rush and the completion of the
Transcontinental Railroad on May 10, 1869. After the railroad
was completed, traffic on the overland trails diminished.
Much of what we know about the journey along the California
Trail comes from diaries and journals the emigrants wrote.
Journal and diary entries have been included in this booklet to
tell the stories of the people, brave and determined, who passed
through City of Rocks on the overland road to California.
“This journey is only for those who have health and spirit to
enjoy and to endure; to those who are unfortunate, it is a
chapter of woe.”
Elizabeth Cornelia Woodcock Ferris, 1856
3
Map—Overview
Why does the Trail go where it goes? This map shows the
topography of the area and how it dictated the paths of the
trails. Emigrants wanted to take the shortest and most level
route with good water and grass for themselves and their stock.
At the top right, the trail goes between the Cottrell and Jim Sage
mountains. The trail passes through the east side of the Elba
Basin, over the Elba-Almo Divide and through the Almo Valley
turning west into the City of Rocks through gaps in the east
ridge. The outlet at the south end of the City of Rocks is a gap in
the south ridge. Granite Pass is a low point in a high mountain
range which extends for miles in either direction.
Overland Trails
City of Rocks National Reserve
Castle Rocks State Park
¯
0
1
2
4 Miles
4
The Parting of the Ways to the Elba Basin
The “parting of the ways” refers to the place where the
California Trail separates from the Oregon Trail. Just west of
where the Oregon Trail crosses the Raft River is where emigrants
had to make the decision about their destination.
“July 15 … came to Raft River, a small stream that flowed from
the mountains on our left. Here the roads fork again, the righthand one turning off northwesterly towards Oregon, while we
took the left-hand one, going southwesterly towards California,
leaving Snake River, and traveling up Raft River.”
Margaret A. Frink, 1850
Emigrants heading to California turned south and followed the
Raft River, with the Cotterel Mountains on their right.
McClendon Springs, at the base of the Cotterel Mountains, just
southwest of present day Malta was a resting stop on the trail.
“July 6, ...found a splendid spring that burst out from the base of
t
City of Rocks National Reserve
•
•
National Park Service
National Park Service
Idaho Department of Parks and Recreation
U.S. Department of the Interior
Idaho Department of Parks and Recreation
Campground
To Oakley
1
Bread Loaves
Group Camp
2
1
Window Rock
Parking Lot Rock
4
3
1 Mile
Finger
Rock
2
45
44
Flaming Rock
Window Arch
Bath Rock
N
W
To Visitor Center
and Almo
E
Elephant
Rock
To Bread Loaves
S
To Twin Sisters
To Oakley
3
4
Juniper
Group camp
To Oakley
Check-in 2:00 p.m.
1
Check-out 1:00 p.m
Twin Sisters
Group Camp
CAMPSITES
GROUP SITES
CAMPSITES
1 walk-in 320’/rock/tent pad/ D
33 main road/rock/ F
2 walk-in 135’/rock/tent pad/ C
34 rock/ D
3 rock/tent pad/ C
35 rock/ C
4 rock/tent pad/ F
36 walk-in 93′/rock/ C
5 main road/rock/ RV <18'/ D
37 Window Arch Rock/tent pad/ B
6 rock/ tent pad/ D
38 rock/tent pad/ D
8 people - 2 tents - 2 vehicles/campsite
Juniper
12-25 people/night
Twin Sisters
12-35 people/night
Campsite Fee ………………………… $12.72
Reservation Fee ……………………… $10.60
Bread Loaves
12-25 people/night
6% State sales tax included in fees above
RESTROOMS
(located near campsite or parking lot)
7 rock/tent pad/RV 25’/ F
39 parking lot/tent pad/RV 40'/D - Camp Host
8 Boxtop Trailhead/walk-in 184′/tent pad/ F
40 walk-in 104′/ D
9
Boxtop Trailhead/walk-in 120′/tent pad/ F
41 walk-in 177′/ D
Site 12
10 Boxtop Trailhead/walk-in 243′/tent pad/ A
42 walk-in 220′/ C
Site 27
11 Practice Rock/tent pads/ C
43 walk-in 273′/ B
Bath Rock parking lot
12 rock/RV 25’/ C
44 walk-in 81′/rock/ C
Parking Lot Rock
13 loop road/tent pad/ F
45 walk-in 131′/secluded/ B
Bread Loaves
14 rock/tent pad/ F
46 main road/tent pad/ B
Site 62 – Logger Springs Rd.
15 Cave Rock/tent pad/ C
47 rock/tent pad/ C
16 walk-in 220′/rock/ A
48 walk-in 115′/grass/large tent pad/ F
17 walk-in 100′/rock/ D
49 walk-in 147′/large tent pad/ C
18 Turtle Rock/walk-in 213′/secluded/ C
50 main road/ C
19 rock/ C
51 main road/ C
A Best
20 RV 25’/ D
52 walk-in 200′/grass meadow/secluded/ F
B
21 rock/ C
53 road/ B
C Occasional
22 Look Out Rock/tent pad/RV 20′/ F
54 King On the Throne/walk-in 81′/ B
D Very little
23 walk-in 218′/secluded/rock/ D
55 walk-in 144′/secluded/ B
F
24 walk-in 98′/ D
56 walk-in 97′/rock/secluded/ C
25 rock/ C
57 main road/ F
26 rock/ D
28 rock/ C
58 walk-in 545′/rock/secluded/ B
59 walk-in 665′/rock/secluded/ D
60 walk-in 102′/rock/secluded/ C
29 rock/ A
61 road/rock/ D
30 near rock/ D
62 road/rock/ D
31 walk-in 219′/rock/ F
32 Flaming Rock trailhead/walk-in 80′/ B
63 road/view/ F
27 tent pad/ C
64 secluded – near Aspen Grove/ D
Single Site Fee Schedule
Circle Creek Overlook
Juniper Group Site
Twin Sisters Group Site
SHADE LEGEND
Good
Group Site Fee Schedule
(12 people/night minimum)
Reservation Fee ………….………….. $26.50
Per Person Overnight Fee …………...…$3.18
6% State sales tax included in fees above
Reservations can be made by calling the toll free
number 888-922-6743. Online reservations can be
made at www.reserveamerica.com or
www.parksandrecreation.idaho.gov
No reservations from October 1st through
April 30th. Walk-in only.
RULES
• Pay fees at Bath Rock
• Walk-in campers pay for 1 night only
• Length of stay is limited to 14 days in any
30-day period
• Pets on leash at all times
• Gathering of firewood is prohibited
• Use established campsites and fire rings
only
• Quiet hours between 10 p.m. and 7 a.m.
• Maximum of 8 people, 2 vehicles, and 2
tents per individual campsite
No shade
ADJACENT
(3-4) (8-9-10) (14-15) (16-17) (25-26-27)
(23-24 ) (28-29-30) (33-35) (37-38) (35-36)
(41-42-43) (46-47) (48-49) (50-51) (52-53)
(54-55) (61-62-63)
WALK-INS
1-2, 8-10, 16-18, 23-24, 31-32, 36, 40-45,
48-49, 52-56, 58-60
EQUESTRIAN CAMPING
City of Rocks National Reserve offers the
Juniper Group Site for equestrian campers.
This area is remote and primitive. This area
features a corral, standard campsite amenities,
and a vault toilet. Smoky Mountain
Campground near the east entrance to the
reserve offers six sites with water and
electricity, paved camping spurs, corral and
showers.
Revised 08-28-12
City of Rocks National Reserve
Castle Rocks State Park
National Park Service
Idaho Department of Parks and Recreation
Climbing Experience Program
The Idaho Department of Parks and Recreation now
offers visitors the opportunity to experience climbing
on world-class granite.
What is the Climbing Experience Program?
The Climbing Experience Program is a chance for
beginners to try out rock climbing in a safe setting on
some of the best granite in the country. Trained
employees set up easy routes for the novice climber to
get a feel for the rock. Visitors will be able to try their
hand on a variety of routes and difficulties. Participants
will be exposed to concepts, techniques, and equipment
that becomes an excellent introduction to the sport of
climbing.
Why Climb?
Come climbing to explore the scenic beauty of City
of Rocks and gain new personal insights. Rock climbing
is a great way to be challenged physically and mentally.
City of Rocks National Reserve and Castle Rocks State
Park are among the premier rock climbing destinations
in the U.S. Recent surveys show that over 50% of all
visitors to City of Rocks listed rock climbing as their
primary activity. Climbers began establishing routes
here in the 1960’s. Since then, climbers have been
enjoying these granite domes and spires, with over 750
routes ranging from easy walk-ups to some of the most
difficult in the world. A growing number of visitors are
coming to City of Rocks and Castle Rocks to discover
rock climbing for the first time. Inquires and requests for
an introduction to the climbing experience have grown in
recent years. Come discover what draws thousands of
climbers to the “City” every year.
Making a Reservation
To reserve your opportunity to climb,
Call:
208-824-5901
Email: cit@idpr.state.id.us
More Information
City of Rocks National Reserve
PO Box 169
Almo, ID 83312
208-824-5901
What we provide:
What you bring:
•
helmet
•
closed toe shoes
•
harness
•
shorts to the knee or long pants
•
climbing shoes
•
water
•
climbing gear
•
sunscreen
•
rope
•
camera
•
a grand experience
•
safe attitude
•
professionally trained employees
•
willingness to be challenged
Participating visitors will be required to sign a waiver/release form. If participant is under 18, the waiver must be signed by a
parent or legal guardian.
Youths age 10 - 17 must be accompanied by an adult. A youth group is four or more participants, and must include 1 adult
supervisor per four youth. Maximum participants is 8 youths and two adult supervisors.
Safety rules:
• Participating visitors may not bring pets to the site
• Participants or non-participating members of the party may not climb or scramble on rocks unless directly being supervised
by the employee.
• Participants who fail to wear proper safety gear, or otherwise behave in an unsafe manner will not be permitted on the
ropes.
• For safety participants should listen and follow instructions of the employee to the best of their ability.
• Participants not currently climbing or non-participating members of the party should observe or visit quietly, but not offer
guidance or distract the employee while the employee is assisting an active participant.
1 Adult
$ 37.50
2
hours total time
2 Adults
$ 75.00
2-3 hours total time
3 Adults
$100.00
3 hours total time
4 Adults
$120.00
3 hours total time
1 Youth
$ 20.00
1 hour (2 or more youths 2-3 hours total time)
Youth Group (4)
$ 80.00
3 hours, (over 4 youths add $10.00 per additional youth up
to a maximum of 6 youths). Groups with 8 youths will be
scheduled split sessions.
Where do I go from here?
So you’ve got a taste for climbing and you want
to try some more.
Authorized professional guides in City of Rocks National
Reserve and Castle Rocks State Park:
• Sawtooth Mountain Guides - sawtoothguides.com, 208-774-3324
• Jackson Hole Mountain Guides - jhmg.com, 307-733-4979
• Exum Mountain Guides - exumguides.com, 307-733-2297
Get started on your own: Some equipment to consider as a
starter package for the beginner climber. Always purchase
climbing equipment from a reputable manufacturer.
•
•
•
Harness
Shoes
Belay device
•
•
•
Helmet
Locking carabiner
Climbers book on knots
Go climbing with others who have experience before trying it on your own. Remember: Safety is the
climbers first responsibility to themselves and their partner.
For more park information visit:
nps.gov/ciro
parksandrecreation.idaho.gov
Revision 11-07-11
Geological Interpretive Trail
City of Rocks National Reserve
A self‐guided journey to discovering
secrets in the rocks at City of Rocks
City of Rocks National Reserve is a partnership
between the National Park Service and the
Idaho Department of Parks and Recreation
Geological Interpretive Trail
City of Rocks National Reserve
A self‐guided journey to discovering
A self‐guided journey to discovering
the secrets in the rocks of City of Rocks
Prepared by
Idaho Department of Parks and Recreation
and the
National Park Service
City of Rocks National Reserve
PO Box 169
Almo, Idaho 83312
http://parksandrecreation.idaho.gov
www.nps.gov/ciro
January 2012
Contents
What’s in store before you explore? There are twelve
interpretive stations along the 0.6 mile trail. The trail rises 160
feet in elevation, makes a loop at the end, and retraces much of
the same route for a total of 1.2 miles.
Trail Map
Introduction
Green Creek Complex
Almo Pluton
Where Granites Meet
Geologic Map of Trail Vicinity
Overlook: Anticlines, Hogbacks, Upland Basins
Physiography of City of Rocks and Castle Rocks
Stop 1 Granitic Weathering
Stop 2 Panholes
Stop 3 Tafoni
Stop 4 Joints
Geologic Map of City of Rocks
Stop 5 Panholes
Stop 6 Intrusive Contact
Stop 7 Xenolith/Contact
Stop 8 Green Creek Window
Stop 9 Boulders
Stop 10 Joints
Stop 11 Pickelhaube
Stop 12 Pinnacles
Other Points of Geologic Interest
Glossary (words underlined)
For Further Study
Credits
Quiz
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
18
19
20
21
22
23
24
25
28
29
29
30
3
Introduction
City of Rocks National Reserve is part of the Basin and Range
geologic province. Basin and Range topography results from
crustal extension. As the crust is stretched (pulled apart), high
angle faults develop. Along these faults, mountains uplift and
valleys drop, creating the distinctive mountain ranges and wide
valleys of the Basin and Range province.
As rocky ranges rise, the newly exposed rock is immediately
subjected to weathering and erosion. This rock is attacked by
water, ice, wind, and other erosive agents, that have produced
many of the geologic features visible today.
The majority of outcrops at City of Rocks, and all of the
pinnacles, consist of intrusive igneous rock with a granitic
composition. Geologists have mapped the two different types of
granitic rock within the Reserve as the Green Creek Complex and
the Almo pluton.
Circle Creek Basin
4
Green Creek Complex
The Green Creek Complex is an assemblage of metamorphic
rocks consisting of granite, granitic gneiss (metamorphosed
granite), schist and a few other rock types. Radiometric analysis
indicates that the Green Creek granite may be as old as 2.5
billion years (Archean) and is considered to be some of the
oldest rock exposed on the continent west of the Mississippi
River. This granite has a porphyritic texture, meaning it is
composed of crystals of two distinct sizes. The larger crystals are
potassium feldspar. They are embedded in a matrix of smaller
crystals consisting of quartz, biotite, and plagioclase feldspar.
Feldspars are the most common family of silicate minerals. They
are broadly divided into two groups: sodium and calcium‐bearing
feldspars, called plagioclase, and potassium‐bearing feldspars,
called orthoclase, microcline or sanidine, depending on their
crystallographic structure.
Green Creek Complex Granite
Potassium Feldspar
Approximately 1 inch
5
Almo Pluton
Most of the pinnacles at City of Rocks and Castle Rocks are made
of granite from the Almo pluton. The pluton started out as an
intrusive body of magma and has a convoluted contact with the
Green Creek Complex. It is the youngest rock at City of Rocks and
formed about 28 million years ago.
Unlike the granite of the Green Creek Complex, the Almo
pluton has an equigranular texture. Notice in the photograph
below the small uniform size of the crystals in the Almo pluton in
contrast to the variety of sizes in the Green Creek Complex
(previous page).
Both types of granite are cut in many places by dikes of
pegmatite, a very coarse‐grained granitic rock that usually forms
during the last stages of crystallization of a large granitic pluton.
The pegmatites at City of Rocks contain large quartz and feldspar
crystals about the size of a fist.
Almo Pluton
6
Where Granites Meet
The granites of the Green Creek Complex and the Almo
pluton look similar from a distance; however, the Green Creek
granite can easily be distinguished by the large crystals of
potassium feldspar and its darker (reddish‐brown) color and
ragged appearance. The Almo pluton in most places appears
smooth and gray. The Green Creek granite has a higher
concentration of iron‐bearing minerals. Oxidation of the iron
stains the rock rusty brown.
At stations 6 and 7 the granites can be compared where they are
in contact. One of the most dramatic comparisons of these two
granites is the Twin Sisters. This feature was the iconic landmark
for California‐bound emigrants from 1843 to 1882. Twins in si
Geologic and Historic Sites
City of Rocks National Reserve
A self‐guided journey to discovering
geologic wonders and historical sites in City of Rocks
Finger Rock
City of Rocks Na onal Reserve is a partnership
between the Na onal Park Service and the
Idaho Department of Parks and Recrea on
Geologic and Historic Sites
City of Rocks Na onal Reserve
A self‐guided journey to discovering
A self‐guided journey to discovering
geologic wonders and historical sites in City of Rocks
Prepared by
Idaho Department of Parks and Recrea on
and the
Na onal Park Service
City of Rocks Na onal Reserve
PO Box 169
Almo, Idaho 83312
h p://parksandrecrea on.idaho.gov
www.nps.gov/ciro
November 2014
2
Contents
As you drive the City of Rocks road you will be able to see all of
the rocks that are featured in this guide. You may see animals,
faces, or buildings; only your imagina on limits what you see.
5
Steinfells Dome & Jacksons Thumb
Stripe Rock
Lost Arrow Spire
Box Top
Clam Shell
6
7
8
9
10
Circle Creek
Overlook
Tracy Homestead
Camp Rock
Chicken Rock
Monkey‐Face Rock
Slipper Rock
Kaisers Helmet
Treasure Rock
Circle Creek Basin
Devils Bedstead
Overview Map
11
12
13
14
15
16
17
18
19
20‐21
Stone Ruin to “T” in Road
Register Rock
Elephant Rock
Window Arch
Historic Corral
Bath Rock
Creekside Towers
Morning Glory Spire
Anteater
Window Rock
Parking Lot Rock
King on the Throne
Owl Rock
Eric Wood
Bread Loaves
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
3
38
39
South
Twin Sisters
Pinnacle Pass
Other Points of Interest
Further Adventures and Credits
4
City ofMain
Rocks—Main
Road
Introduc on
Overview Map
Introduc on
City of Rocks Na onal Reserve has long been an oddity and
wonder, especially for passing emigrants on the California Trail
(1843‐1882).
Many of these emigrants wrote entries in their journals naming
the rock features as they traveled through the valley.
“…Pyramid Circle and the hills which encircle it, were the most
beau ful and wonderful white rocks that we ever saw. This is
known as the City of Rocks…” –Helen Carpenter 1857
Many of the granite forma ons were named by emigrants on the
trail, local residents, and rock climbers. Can you see what they
saw? Use your imagina on; you might come up with a be er
name for the rocks.
4
City of Rocks Na onal Reserve
Public Roads Overview
Castle Rocks
Finger Rock
Visitor Center
Bath Rock
Twin Sisters
5
Steinfells Dome and
Jacksons Thumb
Steinfells Dome and Jacksons
Thumb are favorite mul ‐pitch
climbs. The dome is named a er the
legendary Steinfell Climbing Club of
Utah; many routes were climbed
during the late 1960’s.
Jacksons Thumb is named a er the
late Ned Jackson, Superintendent
from 1990 to 2001.
6
Stripe Rock
Stripe Rock has become a popular three‐pitch climbing
des na on since the popular route “Cruel Shoes” was
established by Kevin Pogue.
The stripe running down this
forma on resulted as rock
cooled slower than the
surrounding granite, forming
an aplite dike.
7
Lost Arrow Spire
Lost Arrow Spire—City of Rocks
Lost Arrow Spire—Yosemite
Rock climbers in the 1960’s no ced the uncanny
resemblance between the City’s Lost Arrow and the iconic
spire in Yosemite Valley of the same name. The re‐use of
names of several features represents the deep‐rooted
connec on that early climbers had to Yosemite.
8
Box Top
The box on top of this granite monolith resulted from the
weathering of horizontal and ver cal joints. Look for this
feature on the west side of the Circle Creek Basin.
See Map on page 20 ‐21.
9
Clam Shell
Once you recognize the “clam shell” in this granite dome,
it will catch your eye on every visit. Most see it as they
drive through the Reserve; however, very few venture out
to experience the Clam Shell up close.
10
Tracy Homestead
The stone house was home to many early se lers beginning
with William E. Tracy circa 1901. W.E.T. was placed on a stone
on the south side outside upstairs bedroom window.
John H. Hull occupied the house circa 1909 and remodeled the
east bedroom on the main floor, adding the large window and
capstone with the inscrip on MAR 29 1909 J.H.H.
The house was empty for many years and then burned in 1967.
Please respect private property within the Reserve.
11
Camp Rock
Camp Rock was a favorite res ng place for traveling
emigrants. Some wrote their names in axle grease on the
rock face; now over 160 years later, we can see those names
and wonder what it was like for them as they traveled
through the “Silent City.”
Take a moment and walk around the rock. You will see
hundreds of inscrip ons and dates ranging from 1843—1882.
IDA FULLINWIDER, 12 JULY 1881
12
Chicken Rock
This granite forma on is an excellent example of spires, joints
and weathering.
Some call this rock Sco y Dog others have called it Oriental
Castle. What do you see?
There are emigrant signatures on this forma on as well. Please
do not climb or scramble on forma ons with signatures.
13
Monkey‐Face Rock
Be crea ve; can you spot t