"The Castle Mountains range and Johua tree (Yucca brevifolia) woodland, in the Eastern Mojave Desert and within Castle Mountains National Monument (est. 2016), San Bernardino County, California." by David Lamfrom , by-sa/3.0
Castle Mountains
National Monument - California
Castle Mountains National Monument is located in the eastern Mojave Desert and northeastern San Bernardino County, California.
Castle Mountains NM
https://www.nps.gov/camo/index.htm
https://en.wikipedia.org/wiki/Castle_Mountains_National_Monument
Castle Mountains National Monument is located in the eastern Mojave Desert and northeastern San Bernardino County, California.
Castle Mountains represents some of the most unique elements of the Mojave Desert. Nestled between the Nevada state line and Mojave National Preserve, the nearly 21,000 acres of Castle Mountains boasts Joshua tree forests, unbroken natural landscapes, rare desert grasslands, and rich human history. This intriguing area provides serenity and solitude from nearby metropolitan areas.
You can approach Castle Mountains from Walking Box Ranch Road off of Nevada State Rd 164 (Nipton Road) or from several unnamed dirt roads off of Lanfair Road in Mojave National Preserve.
Red Rocks Outcropping
Red rocks frame a stand of Joshua trees and sage brush.
Red rocks frame a stand of Joshua trees and sage brush in the desert floor..
View of Castle Peaks
Foreground is desert greenery. The isolated spires of the Castle Peaks rise up in the background
From Walking Box Ranch road, visitors to Castle Mountains can enjoy the stunning view of the Castle Peaks, which are located in surrounding Mojave National Preserve lands.
Find Your Park on Route 66
Route 66 and the National Park Service have always had an important historical connection. Route 66 was known as the great road west and after World War II families on vacation took to the road in great numbers to visit the many National Park Service sites in the Southwest and beyond. That connection remains very alive and present today. Take a trip down Route 66 and Find Your Park today!
A paved road with fields in the distance. On the road is a white Oklahoma Route 66 emblem.
Maite Arce
Maite Arce is a nonprofit leader and activist who has spearheaded environmental justice and equity, as well as encouraged Latinx communities to enjoy outdoor activities and advocate for conservation of the natural world.
Woman wearing purple jacket smiles on hillside
Series: Women's History in the Pacific West - Lower Colorado Basin Collection
Biographies of women in parks from southern California, southern Nevada, and northwest Arizona
Map of southern California, southern Nevada and northwest Arizona
Castle Mountains
National Park Service
U.S. Department of the Interior
Castle Mountains
National Monument
Castle Mountains National Monument
A New National
Monument
President Barack Obama signed a Presidential Proclamation in February, 2016 creating
the Castle Mountains National Monument. Nestled against the border with Nevada and
bounded on three sides by Mojave National Preserve, the 20,920 acre National
Monument provides serenity, solitude, natural soundscapes and dark night skies. The
National Monument protects an expanse of relatively intact desert ecosystem. It
provides a wide variety of recreational experiences and opportunities for the public to
explore and enjoy including hiking, backpacking, wildlife viewing, scenic driving, as well
as opportunities for solitude and personal discovery.
Mojave Desert
An integral piece of the Mojave Desert, the
Monument is home to important flora, fauna,
water, and historic resources. The Castle
Mountains contain resident populations of, and
migratory corridors for, desert bighorn sheep and
other fauna. It has some of the finest Joshua tree
forest and native desert grassland in the Mojave
Desert. It also completes the protection of the
226-square mile Lanfair Valley watershed,
shielding an aquifer that is critical to life in the
desert ecosystem both within the area and
Mojave National Preserve. Cultural resources
throughout the area reflect a long history of
prehistoric and historic human use.
Flora and Fauna
The Castle Mountains National Monument
provides a critical linkage for plants, animals, and
water between two mountain ranges within the
Mojave National Preserve -- the New York
Mountains to the northwest and the Piute
Mountains to the southeast. The Monument s
high quality desert habitat includes some of the
finest Joshua tree forest in the Mojave Desert, as
well as pinyon pine and juniper forest at the
upper elevations. The Monument s native desert
grassland is a hotspot of botanical diversity. The
unique plant assemblage includes 28 species of
native grasses, about half of which are rare, such
as burro-grass (Scleropogon brevifolius) and false-
buffalo grass (Munroa squarrosa). This high
concentration of rare plants in such a small area
indicates the likelihood of future discoveries of
new plants.
Shaped by millions of years of geologic forces, the
rugged Castle Mountains are emblematic of the
Mojave landscape. Composed of early
Proterozoic gneiss and foliated granites, overlain
by thick volcanic deposits, the Castle Mountains
rise from the broad sweep of the Lanfair Valley to
a height of over 5,000 feet, presenting a
picturesque skyline visible from many locations
within the Preserve in California and
surrounding lands in Nevada, while also
affording spectacular views of the Preserve and
beyond. Hart Peak is the prominent feature in
the Castle Mountains National Monument
skyline at 5,543 feet.
to the desert ecosystem. With its primary
recharge zone in the New York Mountains, this
aquifer feeds Piute Spring located in the Preserve
just south of the Monument. Piute Spring is also
the only perennial stream and riparian corridor in
the Preserve. The Lanfair Valley groundwater
basin is a closed system, with recharge entering
the upper elevations of the New York Mountains
and discharge at Piute Spring. Sampling by the
U.S. Geological Survey (USGS) revealed a
radiocarbon date for the water at Piute Spring of
6,825 years, indicating that discharge from the
spring originated as precipitation in the New
York Mountains thousands of years ago during
the mid-Holocene epoch.
Geology and Hydrology
Underlying much of the Lanfair Valley, including
the Castle Mountains National Monument, is a
large groundwater aquifer of critical importance
With its habitat linkages, wildlife corridors, and
intact ecosystems, the area offers exceptional
opportunities to study plant and animal
movement and connections between diverse
natural systems, especially in the context of
climate change. Ongoing studies of desert
bighorn sheep and other plant and animal species
have shown the priority of this area for scientific
research.
Human History
Some of the best-preserved segments of a wagon
road that linked the Arizona Territory
(Hardyville, now Bullhead City, Arizona) to
settlements in Southern California can be found
in the Monument. Ranchers grazed cattle in the
area and, by 1894, the Rock Springs Land and
Cattle Company had consolidated its holdings in
the eastern Mojave Desert. Much of this historic
ranching operation, which has been nominated
to the National Register of Historic Places as a
historic district, lies within the Monument and
Mojave National Preserve. Characteristic
features of this ranching era can still be seen on
the landscape in the form of corrals and watering
troughs.
In 1907, likely attracted by the volcanic deposits
and igneous intrusions cutting through older
rocks, three prospectors, James Hart and
Planning Your Visit
brothers Bert and Clark Hitt
CASTLE MOUNTAINS NATIONAL MONUMENT
CALIFORNIA
N E VA D A
(
MOJAVE
NATIONAL
PRESERVE
CALIFORNIA
VICINTY MAP
MOJAVE
NATIONAL
PRESERVE
National Park Service
U.S. Department of the Interior
CASTLE MOUNTAINS
NATIONAL MONUMENT
ARIZONA
N E VA D A
Ü
CALIFORNIA
CASTLE MOUNTAIN
MINE AREA
MOJAVE
NATIONAL
PRESERVE
Legend
Castle Mountains National Monument
Federal Lands = 20,920 +/- acres
Patented Claims = 18 +/- acres
State School Lands = 106 +/- acres
Castle Mountain Mine Area (8,340 +/- acres)
(Excluded from Monument)
State School Lands
Patented Claims
OFFICE: LANDS RESOURCES PROGRAM CENTER
REGION: PACIFIC WEST REGION
MAP NUMBER: 198-130,749
DATE: JANUARY 6, 2016
NOTE: ROAD CORRIDOR WITHIN CASTLE MOUNTAIN
MINE AREA IS NOT SHOWN TO SCALE.
ACTUAL WIDTH IS 200 FEET.
0
0.5
1
2 Miles
Ü