Geologically recent events sculpted the rocks of Glacier National Park into sharp mountain peaks and steep-walled valleys.
Published Aug 21, 2008
Despite being quite close to each other, two mountain ridges in western Virginia have very different origins.
Published Mar 15, 2017
Acquired on May 10, 2002, this natural-color image shows the varied landscapes of Big Bend National Park in southwestern Texas.
Published Jul 18, 2010
The diverse landscape in this Washington park includes mountain peaks, glaciers, rivers, lakes, and forests.
Published Jun 24, 2017
Established in 1975, the park saw fur traders nearly two centuries earlier, and it supported human inhabitants thousands of years before that. Today, almost a third of the park is water, and travel through the park is usually by boat.
Published Oct 1, 2006
Over epochs, deposition and erosion have carved sharp spires and deep canyons out of this South Dakota landscape.
Published Aug 27, 2016
A long, active geologic history sculpted the surface features visible today in the Teton mountain range and Jackson Hole valley.
Published Apr 10, 2016
Lake Jänisjärvi is a roughly oval-shaped lake, some 13 by 17 kilometers (8 by 11 miles) across, in northwestern Russia, near the Finnish border. The basin for this lake was formed hundreds of millions of years ago by a meteorite impact.
Published Apr 6, 2008
Acquired January 16, 2005, this true-color image shows part of the inhospitable limestone landscape of western Madagascar, with bare rocks and vegetation forming a patchwork of gray and green.
Published Nov 27, 2009
Americans celebrate the 75th anniversary of Shenandoah National Park, just 75 miles from Washington, DC, but worlds away in spirit.
Published Jun 25, 2011
A national park and preserve almost twice as large as Yellowstone provides ample habitat for brown bears and salmon.
Published May 14, 2016
Glacier National Park in Montana sits at the northern border of the United States.
Published Mar 26, 2006
One hundred million years of rock formation are visible in exposed layers at Waterpocket Fold in Capital Reef National Park. This astronaut photo from June 14, 2009, shows the layered, multi-colored rock formations.
Published Jul 6, 2009
