Kohlschütter is a lunar crater that cannot be viewed directly from the Earth as it lies. It is located a couple of hundred kilometers to the southeast of the Mare Moscoviense, and due south of the smaller crater Nagaoka. It is a isolated formation surrounded by a multitude of smaller impacts typical of the battered far side. The outer rim is worn and eroded, with a small crater across the northwest side, and smaller impacts along the west and northeastern edge. (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.