Nine Mile Canyon, about 20 miles northeast of Price off Highway 6 toward Wellington, contains one of the longest and densest concentrations of ancient rock art in North America. The canyon runs roughly 40 miles through sandstone country, and its walls are covered with petroglyphs and pictographs left by the Fremont culture (roughly 900–1300 CE) and later Ute peoples — hunting scenes, anthropomorphic figures, bighorn sheep, and abstract geometric patterns that researchers still debate.
The standard approach is to drive the Nine Mile Canyon Road from the Wellington end, stopping at pullouts along the way. The most famous panel is the Great Hunt, a long frieze of bighorn sheep being driven toward hunters, sometimes described as one of the finest examples of narrative rock art in the world. Allow at least four hours for a thorough exploration; the road is unpaved but passable in a standard vehicle in dry conditions. Carry water and food — there are no services in the canyon. The site is managed by the BLM; admission is free.