Drygalski (Moon)

Named after Erich Dagobert von Drygalski - German geographer, geophysicist (1865-1949).

Drygalski is a large lunar impact crater that lies along the southern limb. It partly overlies the crater Ashbrook to the west on the far side. Just to the north is the smaller Boltzmann. The location of this crater restricts its observation from the Earth, and even under conditions of favorable libration it is viewed from the edge. (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.