![An angled view over the Martian surface showing a broad, smooth plain in shades of purple and reddish-brown. A large, shallow circular crater sits on the right, with a smaller, fainter crater to the left. The ground looks gently rippled and worn, with subtle colour variations giving the surface a mottled, almost velvet-like texture.] CREDIT ESA/DLR/FU Berlin](/cdn-cgi/image/onerror=redirect,width=640,height=640,format=webp/https://storage.googleapis.com/uploads.mongoosehq.com/url/media/124503588/df6ea78415913244e9229b5c851919abe7e90450fdcb9125314f507753f1e896)
Overview
- New HRSC views of Utopia Planitia show a sharp divide between bright sands and a darker layer that covers more ground than in Viking images from 1976.
- Scientists identify the dark blanket as volcanic material rich in mafic minerals such as olivine and pyroxene, which gives it a dark tone.
- Researchers are weighing two causes for the apparent spread, either wind moving ash or removal of lighter dust that exposed darker deposits.
- Within the dark field, a 15-kilometer-wide crater shows a pale ejecta ring and winding floor patterns that hint at slow ice movement below the surface.
- The landscape also features scalloped depressions and long grabens, pointing to subsurface ice loss and crustal cracking in this ancient, ice-rich basin.