POTD July 12, 2013: Kolob Canyons, Zion National Park, Washington County, Utah

Kolob Canyons, Zion National Park, Washington County, Utah
Photographer: Michael Vanden Berg

Jurassic-age Navajo Sandstone forms the massive red cliffs of the often-overlooked Kolob Canyons area of Zion National Park. Hanging valleys are present where relatively small tributary streams have eroded downward at a slower rate than the larger trunk stream.