Wurzelbauer is the remnant of a lunar crater. It is located in the rugged terrain 's southern hemisphere. The slightly smaller crater Gauricus lies next to the eastern rim, while to the north-northeast is Pitatus. The rim of this crater has been deeply eroded, and now forms a low, somewhat irregular ridge around the interior floor. (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.