It appears on the license plates and in numerous official and promotional documents. The arch formed in the Jurassic Entrada Sandstone. The park is located outside of Moab, Utah in the east-central part of the state. The numerous arches seen at Arches National Park resulted from upwelling of salt from the Paradox Formation. Over time, the central portions of some of these fins calved away leaving arches.
Arches are distinct from natural bridges.
Gravity and weathering cause the central parts of some fins to fall away leaving an arch. Natural bridges are formed when two meanders of a stream erode through a rock wall. Landscape Arch on the Devil's Garden Trail is the longest arch in the world. The Colorado River meanders past Dead Horse Point State Park, Utah , near Moab, before entering Canyonlands National Park. The muddiness of the river is typical.