Obruchev (Moon)

Named after Vladimir Afanasievich Obruchev - Soviet geologist (1863-1956).

Obruchev is a disintegrating lunar crater that lies along the southern shore of Mare Ingenii, on the far side. Less than three crater diameters to the south is the crater Chrétien, and about the same distance to the southeast lies Oresme. The outer rim of this crater has been heavily damaged and now forms an irregular, rugged ring about the interior. The crater partly overlies the satellite crater Obruchev M to the south, and there is a pair of smaller craters along the western rim and inner wall. (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.