What's hiding behind these giant holes on the Moon?
http://sploid.gizmodo.com/whats-hiding-behind-these-giant-holes-on-the-moon-1606920676/+caseychan
Mysterious 260-foot crater discovered in remote region of Siberia
http://news.yahoo.com/blogs/sideshow/mysterious-260-foot-crater-discovered-in-remote-region-of-siberia-003800386.html