
The Colorado National Monument rises more than 2,000 feet above the Grand Valley of the Colorado River. Towering monoliths exist within a vast plateau and canyon panorama. You can experience sheer-walled, red rock canyons along the twists and turns of Rim Rock Drive or hike some of the park’s more than 40 miles of maintained trails. Sunrise photo over the monument by William Woodward. Posted on Tumblr by the US Department of the Interior, 4/20/15.

A lovely spring morning begins at Oklahoma’s Wichita Mountains National Wildlife Refuge. Photo by Kathy Suttles. Tweeted by the US Department of the Interior, 4/6/15.

A fiery sunrise over the Mesquite Sand Dunes in Death Valley National Park in California. Many first time visitors to Death Valley are surprised it is not covered with a sea of sand. Less than one percent of the desert is covered with dunes, yet the shadowed ripples and stark, graceful curves define “desert” in our imaginations. The Mesquite Flat Dunes are the best known and easiest to visit in the national park. Photo by Mike Mezeul II. Tweeted by the US Department of the Interior, 4/24/15.
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