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Deep hole spotted on moon

Feature may be ‘skylight’ in an underground lava tube

By
1:21pm, November 20, 2009

New revelations of a big hole in the moon don’t revive the notion that our cosmic companion is made of Swiss cheese. Instead, scientists say, the unusually proportioned feature is most likely a portal into an underground cavern that once held flowing lava.

Analyses of high-resolution images taken by a moon-orbiting probe suggest that the 65-meter-wide, nearly circular feature is between 80 and 88 meters deep, says Carolyn H. van der Bogert, a planetary geologist at Westphalian Wilhelm’s University Münster in Germany. Typical impact craters of this size, she notes, are less than 15 meters deep.

Although the hole is located in a lunar province

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