Wind is a powerful, erosive force, transporting fine-grain sediments that can shape topography and expose darker material underneath the surface. One such feature of wind-scour on Mars is in Gale Crater, where scouring has created a stair-step pattern .
Written by: HIRISE Science Team (28 August 2013)
This is a stereo pair with PSP_009460_1745 .
More info and image formats at http://hirise.lpl.arizona.edu/ESP_017741_1745
Image: NASA/JPL/University of Arizona