The large prominent crater on the left is Plato; directly below Plato the top of Mons Pico is illuminated. The mountains to the east of Plato are the Montes Alpes, which contain the remarkable cleft Vallis Alpes. To the south of The Montes Alpes is Mons Piton, which towers over 2200 meters above the floor of Mare Imbrium. The flooded crater to its east is Cassini. Across the Mare Frigidoris to the north and east of Plato is the large walled plain W. Bond.