Map Projected Browse Image
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These intersecting troughs, or fractures, cut across geologically young volcanic terrain in the Tharsis volcanic province. In many locations near where this image was taken, material has erupted from similar features.

However, it does not appear that material erupted from these particular fractures. Instead, they appear to crosscut material that flowed across the surface, indicating that the fractures are younger than the flows. The widths of the troughs at their rims are about 200 to 250 meters across.

This image is an example of how the surface can provide information about the processes happening in Mars' interior.

The map is projected here at a scale of 25 centimeters (9.8 inches) per pixel. (The original image scale is 27.6 centimeters [10.7 inches] per pixel [with 1 x 1 binning]; objects on the order of 83 centimeters [32.7 inches] across are resolved.) North is up.

The University of Arizona, in Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., in Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.