Wilson arch
From Wikipedia, the free encyclopedia
Wilson Arch, has a span of 91 feet and height of 46 feet, and is located about 24 miles south of Moab, Utah on US 191. The arch is visible from the road. There is a pulloff on the east with interpretive signs.
According to the sign at the pulloff near the arch: "Wilson Arch was named after Joe Wilson, a local pioneer who had a cabin nearby in Dry Valley. This formation is known as Entrada Sandstone. Over time superficial cracks, joints, and folds of these layers were saturated with water. Ice formed in the fissures, melted under extreme desert heat, and winds cleaned out the loose particles. A series of free-standing fins remained. Wind and water attacked these fins until, in some, cementing material gave way and chunks of rock tumbled out. Many damaged fins collapsed like the one to the right of Wilson Arch. Others, with the right degree of hardness survived despite their missing middles like Wilson Arch."
