POTD April 28, 2015: Zion National Park, Washington County, Utah
Zion National Park, Washington County, Utah
Photographer: Gregg Beukelman; © 2014
The Watchman (6,545 feet), composed of Jurassic-age Navajo Sandstone, stands guard over the southern entrance to Zion Canyon. The canyon has been carved by the North Fork Virgin River, which has eroded downward thousands of feet through the Navajo and underlying Kayenta and Moenave Formations.