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Mysterious mound near Moon’s south pole formed by unique volcanic process

16 October 2015 Astronomy Now

A giant mound near the Moon’s south pole appears to be a volcanic structure unlike any other found on the lunar surface, according to new research by Brown University geologists. The formation, known as Mafic Mound, stands about 800 metres tall and 75 kilometres (47 miles) across, smack in the middle of a giant impact crater known as the South Pole-Aitken Basin.