Just south of Las Vegas, in Henderson, the desert keeps a gallery older than the city itself. Sloan Canyon National Conservation Area protects 48,438 acres of Mojave Desert, designated by Congress in November 2002, forming the mountainous southern skyline of the valley.
Its centerpiece is the Sloan Canyon Petroglyph Site, on the National Register of Historic Places since 1978: more than 300 rock-art panels holding nearly 1,700 individual designs, pecked into dark desert-varnished volcanic rock by Native cultures from the Archaic era to historic times. Figures, animals and abstract marks cover the canyon walls — a library written in stone.
The conservation area also includes the 14,790-acre North McCullough Wilderness, with volcanic peaks rising above 5,000 feet. The land is free, day-use public land managed by the Bureau of Land Management, with no private company involved.
A new visitor center is under construction, and the Bureau of Land Management notes that the Nawghaw Poa Road trailhead parking is temporarily closed through November 11, 2026, with official reroute maps available. Check the BLM reroute before you go, bring water, and enjoy one of the most remarkable open-air museums in the American desert.
Photo: U.S. Bureau of Land Management (public domain, via Wikimedia Commons)
