Unidentified Arch* is one of the 1800 insignificant opening through the Park. However, this opening is still interesting in geology formation. This is a typical enlarged crack on sandstone fin very common into the area of North and South Devils Garden. The opening can gains some wideness like Oval Arch in the geologic future. *Unidentified from the book The Arches of Arches National Park -A Comprehensive Study by Dale J. Stevens and J. Edward McCarrick (now out of print).