View Full Version : Bizarre Mars: Did Lava Bubbles Wrinkle This Giant Circle?

2014-Dec-09, 04:10 PM
NASA is puzzled by this “enigmatic landform” caught on camera by one of its Mars orbiters, but looking around the region provides some possible clues. This 1.2-mile (2-kilometer) feature is surrounded by relatively young lava flows, so they suspect that it could be some kind of volcanism in the Athabasca area that created this rippled […]

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