Devil's Garden is home to the largest concentration of the 64 great natural arches of Arches National Park, near Moab. The famous 30m-high Landscape Arch is the longest, with a 90m span, and is in constant danger of collapsing. The main trail in Devil's Garden leads to Dark Angel, an enormous monolith, and proposes a few detours to observe these geological phenomena. Don't neglect the waymarked detours, as they will enable you to get to the loveliest curiosities.