In the lower left part of the image, some small valleys can be spotted, leading into an ancient, nearly completely vanished impact crater (see annotated image), which indicate a past era of liquid water at the surface. In the upper central part of the image a strongly eroded impact crater also shows some little valleys leading into what remained from the crater. Below it, a crater approximately 18 km in diameter displays distinct alcoves and channels in the crater wall. The crater floor also shows a lobate filling, here in an apparently earlier stage.