Another intriguing feature is the light-toned mound in Trouvelot Crater (see annotated image). When zooming in, it shows a ridged and grooved surface. The mound, approximately 20 kilometers long, is partly embedded by the dark material and the dark material also overlies the mound in some parts. Similar light-toned rock outcrops are found elsewhere on Mars. These features are often associated with water-altered minerals and are generally characterized by a higher albedo relative to their surroundings. While multiple formation processes and deposition scenarios are possible, most involve the presence of water – either in a lacustrine environment (like seas) or through groundwater upwelling. A comparable, though larger and higher, light-layered deposit can be found in Becquerel Crater, located just a few kilometers northeast of Trouvelot Crater. The press release from 2013 focuses on Becquerel Crater: A 'radiant' beauty – sulphurous sediments in Becquerel Crater. The formation of these light-toned mounds on Mars remains a complex and ongoing subject of research.