This image reveals bouldery patches on the floor of the giant Hellas impact basin.
The boulders are often crudely aligned. Maybe these boulders were deposited or sculpted by flowing ice in the form of glaciers.
Written by: Alfred McEwen (21 March 2012)
More info and image formats at http://hirise.lpl.arizona.edu/ESP_025688_1355
Image: NASA/JPL/University of Arizona