Nothing to see here. Keep the line moving. I have my doubts. Double Arch was formed from Navajo sandstone dating to 190 million years ago, during the late Triassic to early Jurassic periods.

The National Park Service said the arch was formed from Navajo sandstone that originated in the late Triassic to early ...

The rocks that formed Double Arch - also known as the "toilet bowl" because of the large hole in the formation - consisted of fine-grained Navajo sandstone from the late Triassic to early Jurassic ...