Boltzmann (Moon)

Named after Ludwig Eduard Boltzmann - Austrian physicist (1844-1906).

Boltzmann is an old lunar crater that is located along the southern limb , in the vicinity of the south pole. At this location the crater is viewed from the side from Earth, and so not much detail can be seen. It is located to the north of the walled plain Drygalski, and to the west of the crater Le Gentil. This formation has become eroded by many tiny impacts, leaving the features rounded and worn. (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.