Forbidden Arch, Apache County, Arizona
Photo by Jay Wilbur
NABSQNO 12S-599560-4090845. Forbidden Arch is a cave natural arch eroded from DeChelly sandstone. It is located in a remote area of the Navajo Nation east of Monument Valley, in Apache County, Arizona. Access to the arch requires the services of a guide. Forbidden Arch has a span of about 25 feet.