Photo of the Day (POTD): August 7, 2019

Buckskin Gulch—the longest and deepest slot canyon in the United States—cuts through Jurassic-age Navajo Sandstone. Deposited as an erg, or a sand-dune sea, the Navajo Sandstone contains beautifully preserved cross-beds.

Buckskin Gulch, Kane County. Photo by Adam Hiscock.