THEMIS Image of the Day, January 31, 2019. This VIS image shows part of the floor of Spallanzani Crater. At some point after the crater was created the floor was covered by a fill material.
The material was laid down in layers, which are easily identifiable at the eroded margins of the desposit. Spallanzani Crater is located near the southeast margin of Hellas Planitia in Promethei Terra.