Clavius is a prominent lunar impact crater located on the Moon's surface. It is situated in the southern hemisphere and is known for its large size, measuring about 225 kilometers in diameter. The crater features a well-preserved structure with a flat floor and several smaller craters within it, making it a notable feature for lunar observation. The formation of Clavius dates back to the early history of the Moon, around 4 billion years ago. Its age and characteristics provide valuable insights into the Moon's geological history. The crater is named after the Jesuit astronomer Christopher Clavius, who made significant contributions to the field of astronomy in the 16th century.