This unnamed impact crater on the surface of Aurorae Planum is approximately 27 km in diameter. The floor of the crater is smooth and flat, while a impact crater of this size on the Moon would have a rough, jumbled floor with many slump blocks (like the lunar craters Euler and Kepler). So, it seems likely that the interior of this crater has been partly filled, possibly with basalts or with sand or dust blown by wind. There is a field of sand dunes near the right (west) inner wall of the crater. The floor of the crater has been cut by the landslides that form the edges of Gangis Chasma. Beneath the crater floor are layers of harder material, like the layering near the wall tops elsewhere in Valles Marineris. The geologic structures expected in an impact crater of this size (central peak, melt pool, slump blocks, shattered basement rock) are not apparent.