Tuesday, September 16, 2008

Richat Structure

The Richat Structure in the Sahara Desert of Mauritania is a nearly circular formation almost 50 kilometers in diameter (30 miles). It was once thought to be an impact crater, but is now thought by some to have been caused by uplifted rock sculpted by erosion. For those who care, it lies pretty close to 19.5 degrees latitude. Nevertheless, the Richat Structure remains a mystery.

1 comment:

Anonymous said...

There is no mystery. A lightning strike, caused by interplanetary discharge, carved this out; as it rotated around the central axis. In fact nearly 99% of craters you see anywhere are caused by this.