The top layer of Entrada sandstone is thought to have been deposited 170 million years ago. Harder than the stone below it, the rock forms rounded tops as the lower layers of stone erode away at a faster rate. Image by Bonnie Fink
Hoodoos at Goblin Valley State Park
The top layer of Entrada sandstone is thought to have been deposited 170 million years ago. Harder than the stone below it, the rock forms rounded tops as the lower layers of stone erode away at a faster rate. Image by Bonnie Fink
