Posted by tourdemars to Mars Express at March 18, 2005 11:31 PM

The High Resolution Stereo Camera (HRSC) on board ESA’s Mars Express spacecraft shows flow features that most likely formed by glaciers or ‘block’ glaciers. A so-called ‘block’ glacier, an ice stream with a large amount of scree (small rocks of assorted sizes), flowed from a flank of the massif into a bowl-shaped impact crater (left), nine kilometres wide, which has been filled nearly to the rim. The block glacier then flowed into a 17 kilometre wide crater, 500 metres below, taking advantage of downward slope.