Eratosthenes

Eratosthenes (58 km) sits on the Southern wall of the Imbrium basin, a great mountain range called the Apennines. The heavily terraced walls, which are clear in this image, 3.57 km depth and isolation from other large craters help make Eratosthenes a strong feature in this region. At 3.2 billion years in age, it is a middle-aged crater.
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