Approximate location — plotted from published sources, not a site visit, and not a guarantee of access.
Smithsonian Butte National Back Country Byway is a 9.25-mile BLM scenic road between Rockville and Apple Valley just south of Zion. The unpaved route climbs from the Virgin River floodplain through pinyon-juniper to sagebrush flats, with views of Smithsonian Butte, Eagle Crags, Canaan Mountain, and Zion's West Temple. A short spur reaches the already-listed Grafton townsite. The road closes in heavy rain.
Cultural sites and artifacts are protected by federal law (ARPA/NHPA) — stay on established routes, touch and remove nothing, and follow the managing agency's and the affiliated tribe's guidance on access.