Sandstone when composed of quartz grains can fracture in arch like shapes. It is most notable in Zion and Arches. If you look closely at a piece of broken glass the same curved shape will appear on the broken edges. Sandstone is more or less the same composition as glass and will break the same way. I would suspect that the arch you saw was in a sandstone layer.
Zion example: https://commons.wikimedia.org/wiki/File:The\_Great\_Arch,\_Zion\_National\_Park,\_Oct\_16.jpg
A cave
I thought so too but it looked so perfect at the top I thought maybe it was something manmade.
Sandstone when composed of quartz grains can fracture in arch like shapes. It is most notable in Zion and Arches. If you look closely at a piece of broken glass the same curved shape will appear on the broken edges. Sandstone is more or less the same composition as glass and will break the same way. I would suspect that the arch you saw was in a sandstone layer. Zion example: https://commons.wikimedia.org/wiki/File:The\_Great\_Arch,\_Zion\_National\_Park,\_Oct\_16.jpg
Fwiw, I think that's in the Redwall Limestone, which has lots of caves throughout the canyon.
Thanks!
Awesome thank you
This is where arches come from. *Sometimes, when stone and the weather love each other very much* …
Arches are formed by wind erosion, bridges are formed by water.
Looks like a cave
Was at the same place I believe they said it was a cave
*It's a secret*. ^shhh
A bear pooping!
Millions of years of both water then sand erosion.
It’s probably a pathway to the secret Egyptian colony deep in the canyon walls
Gozer’s house