Piccolomini (88 km) crater is interesting because it is overlapped on Rupes Altai wall, which is the second belt formed by the impact that resulted Mare Nectaris basin. This wall is more pronounced from the western edge of Piccolomini. North of the crater, are starting several small ones: Piccolomini M (23 km), D (17 km), E (18 km) and C (26 km) and on south west is adjacent to the crater