National Back Country Byway Map
Map of Smithsonian Butte National Back Country Byway in the BLM St. George Field Office area in Utah. Published by the Bureau of Land Management (BLM).
Take in the stunning desert landscape of Southern Utah when you drive the Smithsonian Butte Back Country Byway. All nine miles between Big Plain Junction and Rockville, UT, just south of Zion National Park's southern entrance, offer gorgeous views of the surrounding geographic wonders including the byway's namesake and Zion Canyon, not to mention the historical Grafton ghost town. Allow 45 minutes to drive the byway. The Smithsonian Butte Back County Byway doesn't receive regular maintenance and quickly becomes impassable when wet. It also features a steep grade and steep drop-offs in certain sections and is not suitable for over-sized vehicles or towing trailers.
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Bureau of Land Management (BLM), May 2013