article_snippet: Bel'kovich - which is
article_snippet: 133 miles (214km) wide - and Compton - which is 101 miles (162km) wide.
article_snippet: In this artist's impression, the red region is the volcanic complex, and measures 22 miles (35km) in diameter.
article_snippet: On the left is the near side, and the right is the far side of the Moon .