The Great Gallery is in Horseshoe Canyon, which can be accessed by dirt roads either from Green River Utah or from UT 24. The roads are usually passable by cars but care must be taken for sand and ruts. The roads will also become impassible for all vehicles when wet. The dusty road winds through the plains of the San Rafael Desert. The 40 mile drive, where we saw coyotes and antelope, prepares you for the isolation of Horseshoe Canyon.
Most hikers access Horseshoe Canyon from a trailhead before the Maze District.
Access from the Maze District requires 4 wheel drive. Call ahead for information about this route to the Great Gallery. The hike is about 7 miles round-trip from the main trailhead. Cairns help you descend over 700 feet to the canyon bottom. From there, you hike southwest through Horseshoe Canyon.