Petropavlovskiy (Moon)

Named after Boris S. Petropavlovskiy - Soviet rocketry engineer (1898-1933).

Petropavlovsky is a crater on the far side. It is attached to the southern rim of the slightly larger crater Razumov, intruding slightly into the interior. Just to the west is the crater Frost, along the southern rim of the walled plain Landau. This is a moderately eroded feature, with a worn outer rim that is marked by several lesser impacts. (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.