Brain rocks. Sandstone is curiously eroded through the forces water and wind acting over eons. Cracks and joints arise when water freezes and expands repeatedly, braking apart the soft sandstone.
Location: North Coyote Buttes, Paria Canyon-Vermilion Cliffs Wilderness, Arizona
Image ID: 20766
Location: North Coyote Buttes, Paria Canyon-Vermilion Cliffs Wilderness, Arizona
Image ID: 20766
Sheepeater Cliffs, an example of columnar jointing in basalt due to shrinkage during cooling.
Location: Yellowstone National Park, Wyoming
Image ID: 19794
Location: Yellowstone National Park, Wyoming
Image ID: 19794