POTD May 28, 2014: Zion National Park, Washington County, Utah

Zion National Park, Washington County, Utah
Photographer: Ken Krahulec; © 2013

Towering cliffs of Jurassic-age sandstone constrict lower Zion Canyon. The prominently cross-bedded Navajo Sandstone, deposited in a vast dune field comparable to that of the modern-day Sahara, forms the cliffs, including the narrow spine of Angels Landing at left.