[2] It is visible from the road to the east where there are turnouts with interpretive signs.

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.

Wind and water attacked these fins until, in some, cementing material gave way and chunks of rock tumbled out.

Others, with the right degree of hardness survived despite their missing middles like Wilson Arch.