Caprock-induced Arch A small arch has formed along the boundary layer between a harder caprock (above) and softer limestone (underneath). Taken along the Rim Trail of Bryce Canyon, along the Fairyland Loop portion.
This image is from the presentation "Mostly Escalante 2011 - Coyote Gulch, Harris Wash, Red Breaks, Bryce, and Zion - Main Narrative".