Silberschlag is a small, circular Impact crater in the central portion. It lies. Silberschlag is bowl-shaped and is joined at the northern rim by a small ridge. Just to the north is the prominent Rima Ariadaeus, a wide, linear rille that runs toward the east-southeast. (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.