Wilson Arch

Wilson Arch is a natural sandstone arch in San Juan County that formed through long-term erosion of the rock layers. The opening reveals how water and wind gradually carved through the stone, leaving behind this distinctive formation.

The arch takes its name from Joe Wilson, an early settler who built a cabin in the nearby Dry Valley region. His connection to the area became part of how locals referred to this natural feature.

The formation represents geological processes in the American Southwest, where sandstone structures emerge through erosion patterns over millions of years.

The formation sits directly along U.S. Route 191 with designated parking spots very close by. Signage along the roadside helps visitors understand what they are looking at without requiring special equipment or long hikes.

The arch formed when water infiltrated rock fissures, creating a series of sandstone fins that underwent extensive erosion until openings appeared.

Location: San Juan County

GPS coordinates: 38.27250,-109.37100

Latest update: December 11, 2025 11:08