Razumov is an impact crater on the far side , beyond the northwestern limb as seen from the Earth. It lies along the southeastern outer rim of the walled plain Landau. Intruding slightly into the southern rim is the slightly smaller crater Petropavlovskiy. To the west-southwest lies Frost. (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.