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Thursday, July 19, 2012

Scientists fascinated after Nasa orbiter photographs open crater leading into underground cavern on Mars

Nasa scientists are baffled as to what - or maybe even who? - created this unusual hole on the surface of Mars.

The hole was discovered by chance on images of the dusty slopes of the Red Planet's Pavonis Mons volcano.

It appears to be an opening to an underground cavern, partly illuminated to the right of the opening.

Analysis of this and follow-up images revealed the opening to be about 35 meters across.

The interior shadow angle indicates that the underlying cavern is roughly 20 meters deep.

Why there is a circular crater surrounding this hole remains a topic of speculation, as is the full extent of the underlying cavern.

Holes such as this are of particular interest because their interior caves are relatively protected from the harsh surface of Mars, making them relatively good candidates to contain Martian life. Read More