Lichtenberg is an isolated lunar crater located in the western part of the Oceanus Procellarum. The nearest crater of note is Briggs to the south. Lichtenberg has a small system of rays, a characteristic of Copernican age craters. The rays extend to the north and west of the crater but not elsewhere. (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.