Shafer Trail
Driving the Shafer Trail between Canyonlands National Park and Moab is absolutely hair raising. The descent from the park's visitors center to the canyon floor is a heart stopping collection of narrow switchbacks. Better yet, the narrow trail is flanked by a sheer, 1,000-foot cliff on one side and a rock wall on the other. And if that is not enough disincentive, there is little between you and a precipitous drop other than a few tenacious sage brush.