A view of Echus Chasma on Mars showing a network of light-colored, incised valleys, as seen by ESA's Mars Express orbiter.
A false-color view of Echus Chasma on Mars, reflecting differences in elevation.
An image of Echus Chasma taken by the European Space Agency's Mars Express orbiter on Sept. 25, 2005.
Echus Chasma, which resembles Arizona's Grand Canyon, is an approximately 60 miles long and 6 miles wide.
New images from U.S. and European spacecraft support growing evidence that Mars once was a water-rich planet capable of supporting life.
The new views reveal details of regions thought to contain water-bearing minerals and geological formations formed billions of years ago.
Stunning images captured by the High-Resolution Stereo Camera aboard the European Space Agency's Mars Express show the cliffs, valleys and plateaus of Echus Chasma, thought to have been one of the largest water-source regions on Mars.
Echus Chasma resembles a dry riverbed 60 miles long and 6 miles wide. It cuts through the Lunae Planum high plateau north of Valles Marineris, the so-called Grand Canyon of Mars.
The images — released Tuesday but taken on Sept. 25, 2005 — show side-branching valleys roughly 6 miles long and half a mile deep.