Lade is the remains of a lunar crater that has been flooded by lava. To the north is the crater Godin, and in the south-southeast is the worn, lava-flooded Saunder. The southern rim has been completely covered or destroyed, and there are gaps in the thin southeast rim. The surviving crater wall is worn and somewhat hexagonal in outline. (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.
