WATCH: Game of Thrones' Mountain bests 1,000-year old Icelandic

Hafthor Bjornsson, who plays Ser Gregor Clegane or

The Icelandic Giant Thor Bjornsson

The unbelievable metamorphosis of The Mountain

Hafþór Júlíus Björnsson - IMDb

Game of Thrones Discount Bundle, Glacier Hike & Ice Cave or Boat Ride on Jokulsarlon, Game of Thrones Tour Bundle in Iceland

Watch 'The Mountain' from Game of Thrones break a 1,000 year old weightlifting record

The Ultimate Guide to Game of Thrones in Iceland

Hafthor Bjornsson tells fans 'wiping my a*** is difficult' after suffering worst injury of his career

The Ultimate Guide to Game of Thrones in Iceland

Epic Iceland Itinerary: Game of Thrones Filming Locations

Twenty-Four Hours With The Mountain

Road Trip: Iceland's Northern Lights - Enchanting Travels