Mudstone of what is probably the Chinle Formation, in the Chuska Mountains near Lukachukai, Arizona.

---

Mudstone of what is probably the Chinle Formation, in the Chuska Mountains near Lukachukai, Arizona. A bluff of Wingate Sandstone is in the background.

---

Size: 2832px × 4256px
Location: Indian Service Route 13, Lukachukai, Arizona, USA
Photo credit: © Ken Barber / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: arizona, chinle, chuska, formation, geology, red, rock