POTD November 25, 2013: Grand Staircase–Escalante National Monument, Kane County, Utah

Grand Staircase–Escalante National Monument, Kane County, Utah
Photographer: Tyler Knudsen

Powerful and turbulent flash floods carved this convoluted slot canyon into the Jurassic-age Navajo Sandstone along Willis Creek. Differential weathering of alternating weak and more resistant sandstone layers formed the horizontal grooves etched into the canyon’s walls.