La Condamine is a small lunar crater on the southern edge of the Mare Frigoris, in the northern part. It lies to the northeast of the mountain-rimmed Sinus Iridum formation in the northwest part of the Mare Imbrium. The crater rim is low and rounded, with the edge worn and eroded along the northeast side. The outer wall is somewhat polygonal, particularly in the southwestern half. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.