Tags: Crater.
Kästner is a lunar crater that is located near the eastern limb of the Moon to the southwest of the Mare Smythii. Just to the northwest of Kästner is the walled plain Gilbert. To the south is the prominent crater Ansgarius and to the southwest lies La Pérouse.This formation belongs to the category termed a walled plain. It has a worn irregular outer wall that is overlaid by several small craters and there is a small break along the north-northeast.