Back to album

Painted Desert

The Bentonite Hills are located outside the park boundary on Bureau of Land Management land. The Bentonite Hills appear as softly-contoured, banded hills in varying hues of brown, red, purple, gray, and green. The hills are composed of the Brushy Basin shale member of the Morrison Formation. This layer was formed during Jurassic times when mud, silt, fine sand, and volcanic ash were deposited in swamps and lakes. Bentonite clay (altered volcanic ash) absorbs water and becomes very slick and gummy when wet, making vehicle or foot travel difficult or impossible. Repeated cycles of absorbing water and then drying results in a popcorn-like appearance on the clay's surface.

There are no trails through the Bentonite Hills. The surface is easily damaged, scars from footprints and tire tracks take many years to heal. for perspective there is a car at the left and all the way in the back the Mars recearch facility. Thank you for your support, views, faves, and comments !

8,644 views
335 faves
39 comments
Uploaded on July 14, 2022
Taken on March 31, 2022