Right "across the street" from Wall Drug is the entrance to Badlands National Park. Fascinating. And HOT. If you got lost in this maze of canyons you'd probably perish before you were anywhere near getting out. We came across 2 women bicycling from New York to Eugene, Oregon at one of the rest stops here. They were filthy and resting in the little bit of shade cast by a small tree in the parking area. One had a teddy bear bunjee-corded to her panniers.