Aitken (crater)

Aitken is a large lunar impact crater on the far side of the Moon, lying along the northern rim of the South Pole–Aitken basin. It dates to the Late Imbrian epoch and is notably deep due to striking broken, porous ejecta from the basin. The inner wall is terraced and varies in width, with the narrowest portion in the southwest. The interior floor has been resurfaced by darker lava, especially in the southern half, and anorthosite with very low mafic abundance has been detected in the central peaks. The crater was a target of observation on Apollo 17.