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http://antwrp.gsfc.nasa.gov/apod/ap021028.html]What in tarnation...
*50 km in diameter in Saharan Desert. Isn't believed to be a volcano, so I didn't put this in the "Active Terran Volcanoes" thread.
One of the main mysteries is why it's so circular in appearance.
Very striking. :-\
--Cindy
We all know [i]those[/i] Venusians: Doing their hair in shock waves, smoking electrical coronas, wearing Van Allen belts and resting their tiny elbows on a Geiger counter...
--John Sladek (The New Apocrypha)
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It looks more like an open strip mining operation.
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Either that or a structural representation of an asteroid impact
or it was a lake that has dried and slowly formed such a structure
Chan eil mi aig a bheil ùidh ann an gleidheadh an status quo; Tha mi airson cur às e.
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