You've been plodding along the hot and dusty Horseshoe Canyon foot trail for several miles hoping that you're getting close when you round a bend in the trail and come face to face with your destination: the Great Gallery. Your immediate reaction is one of awe; instinctively you know that you're in a very special place. There is the magnificence of the Gallery itself, a huge, sandstone amphitheater nearly 200 feet wide. There is the powerful religious symbolism of the life-size, shamanic-type paintings - featureless heads and bodies without visible arms or legs.