Acquired November 13, 2002, this false-color image shows part of the Ouachita Mountains in southeastern Oklahoma.
Published Oct 24, 2010
An ancient collision between continents left a series of fractures in the bedrock around Virginia’s Massanutten Mountains. The event spawned some unusual zig-zagging stretches on the Shenandoah River.
Published Dec 5, 2014
These colorful sequences of rock tell a story of geologic upheaval.
Published Jan 25, 2017
An underground mass of volcanic rock may have caused the Appalachian Mountains to bend in Pennsylvania.
Published Sep 18, 2014
The Susquehanna River cuts through the folds of the Valley-and-Ridge province of the mountain chain.
Published Apr 12, 2020
The red and orange tones of autumn had faded to brown in the mountains of New York and Vermont when this true color image was taken on November 8, 2009. The contrast between the green and gold valleys and brown mountains help reveal the unique geography of the region.
Published Nov 14, 2009
As seen from the International Space Station, a long trench divides the Columbia Mountains and the Canadian Rockies.
Published Dec 13, 2014
The Anti-Atlas Mountains of northern Africa and the nearby Atlas mountains were created by the prolonged collision of the African and Eurasian tectonic plates, beginning about 80 million years ago.
Published Feb 10, 2002
Despite being quite close to each other, two mountain ridges in western Virginia have very different origins.
Published Mar 15, 2017
A mountain-building event lifted up this area between 40 and 70 million years ago.
Published Nov 24, 2019
