“Mysterious Light-Toned Deposit in Vinogradov Crater”
This image of Vinogradov (20.981°S, 323.137°E), a heavily eroded 220 km diameter crater in Margaritifer Terra, was taken by HiRISE on July 1st, 2014. You can see many strange light-toned blobs, some of which appear circular and probably outline small craters. Scientists think this could have formed from the ejecta of a nearby crater, but the details of its origins are still unknown.
The width of this image is about 1 km.
Credit: NASA/JPL/University of Arizona