Saenger (Moon)

Named after Eugen Saenger - German rocketry scientist (1905-1964).

Saenger is an ancient lunar crater that lies on the far side , just beyond the eastern limb. To the west-northwest is the crater Erro, and due north lies Moiseev. To the northeast is Al-Khwarizmi. The outer rim has been eroded and reshaped by subsequent impacts, leaving the outer wall nearly destroyed to the north and south. (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.