Photo of the Day: August 21, 2019. Dead Horse Point State Park, Grand County. Photo by Michael Vanden Berg.

Dead Horse Point State Park, Grand County. Photo by Michael Vanden Berg.

Photo of the Day: August 21, 2019. Dead Horse Point State Park, Grand County. Photo by Michael Vanden Berg.

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.

Utah Mining 2018 c-126