Image Credit: NASA/JPL-Caltech/University of Arizona
(糖心视频Org.com) -- Mars' Claritas Fossae region is characterized by systems of "graben" running mainly north-west to south-east.
A graben forms when a block of the planet's crust drops down between two faults, due to extension, or pulling, of the crust.
This image was originally released July 13, 2011.
Provided by JPL/NASA
