A little over a month ago, the man who plays The Mountain on Game of Thrones broke a 1,000-year-old record, becoming the "World's Strongest Viking" with the lift of a log.

But that's just not good enough for 6'9" Icelander Hafþór Júlíus Björnsson. He wants to be the World's Strongest Man. From someone who exclaimed, "Nothing can stop me! Nothing can break me!” after winning his last competition, we'd say he's got the world's biggest backbone.

So, what's he been up to lately?

Well, here he is breaking a new world record by throwing a 56-pound kettle ball over a 19'3" bar, because Arnold Schwarzenegger wants him to. This competition, The Arnold Strongman Classic, pits enormous humans against each other in feats of strength like throwing and lifting really, really heavy stuff.

The Mountain was a bit dejected about his overall performance, saying on his Instagram account: "I had ups & downs at the Arnold Strongman Classic this past weekend. I did an awful mistake in the deadlift which cost me alot of points! Yesterday made me feel a little bit better though. I did a weight for height event on the main stage. I went over 19'3 with a 56lbs weight and that is a New World Record!!"

Better angle of the World Record at 19'3 ! A video posted by Hafþór Júlíus Björnsson (@thorbjornsson) on Mar 10, 2015 at 1:07am PDT

Björnsson wrapped up his muscle-cracking feats of strength with a selfie. Naturally.

Just finished my workout today.. Hot and cold baths now for some recovery.. A photo posted by Hafþór Júlíus Björnsson (@thorbjornsson) on Mar 10, 2015 at 7:23am PDT

BONUS: 5 Things You Didn't Know About Game of Thrones