Lacaille is a prominent lunar impact crater located on the Moon's surface. It is situated in the southern hemisphere and is characterized by its well-defined circular shape and steep walls. The crater has a diameter of approximately 30 kilometers and features a relatively flat floor, which may contain some small hills or ridges. Named after the French astronomer Nicolas Louis de Lacaille, the crater is part of a larger region filled with other craters and geological formations. Lacaille is often studied for its geological features and the insights it provides into the Moon's history and surface processes.