An unnamed arch in Elbert County, Colorado
Photo by Jay Wilbur
NABSQNO 13S-532771-4334586. This small, unnamed waterfall natural bridge is on private land in Elbert County, Colorado, that is leased for grazing. Permission of both the owner and leasee should be obtained before visiting the arch. It has a span of 17 feet, a height of 3 feet, a width of 7 feet, and a thickness of only 6 inches.