Arches

This site features more than 2,000 natural sandstone arches, with some of the most popular arches in the park being Delicate Arch, Landscape Arch and Double Arch.[17] Millions of years of erosion have created these structures located in a desert climate where the arid ground has life-sustaining biological soil crusts and potholes that serve as natural water-collecting basins. Other geologic formations include stone pinnacles, fins, and balancing rocks. -Wikipedia