Think you're tough? Think again. The Mountain from Game of Thrones took part in Iceland's Strongest Man competition, and he pretty much owned the whole damn thing. Watching him lift these stones like they were nothing is scary enough.

Watch the video below:

Iceland's Strongest Man 2015 - Atlas Stones First day was yesterday. I won all three events. 5 more to go today.

Posted by Hafþór Júlíus Björnsson (Hafthor Julius Bjornsson) on Wednesday, June 17, 2015