This natural-color image of Hells Canyon was captured by NASA’s Landsat-7 satellite on September 19, 2002. The image shows the northern part of the canyon, where the Imnaha River joins the Snake River.
The geology of the Grand Canyon has amazed visitors since John Wesley Powell first navigated the Colorado River in 1869. Now the Landsat Data Continuity Mission (LDCM) offers a new view of the gorge.
Black Canyon of the Gunnison National Park is a small park that encompasses the steep-walled canyons of the Gunnison River, which drains snowmelt from the Rocky Mountains in western Colorado.
Grand Canyon National Park spans 277 river miles and often stretches 10 miles wide. But the true wonder arises from its depth...or height, depending on where you stand.
The Green River in eastern Utah once carved soft sediment into meanders on a floodplain. Then the land and mountains rose and the river dug deep, preserving those meanders in stone.