Arches National Park contains the world's largest concentration of natural stone arches. This National Park is a red, arid desert, punctuated with oddly eroded sandstone forms such as fins, pinnacles, spires, balanced rocks, and arches. The 73,000-acre region has over 2,000 of these "miracles of nature."
Arches National Park, Moab, Utah. http://www.nps.gov/arch