This is a bit freaky.

‘A Swedish expedition team has found an unidentified object at the bottom of the Baltic Sea, leaving some to believe it’s the remnants of an extra-terrestrial ship…The object had an egg shaped hole leading into it from the top, working like an opening. On top of the object, they found strange stone circle formations, which resembled small fireplaces. The stones were covered in something that resembled “soot.”’

Full article here, and just for fun here’s an artist’s impression:

(Image courtesy of http://vaghauk.deviantart.com.)