The "Eye of the Sahara" is a strange structure you can only see from space. Scientists now think they know how it formed, but they are still mystified by the mysterious crater. Read more: http://www.techinsider.io/ FACEBOOK: https://www.facebook.com/techinsider TWITTER: https://twitter.com/techinsider INSTAGRAM: https://instagram.com/tech_insider/ TUMBLR: http://techinsider.tumblr.com/