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Watch ‘The Mountain’ from Game of Thrones Break a 1,000-Year-Old Weightlifting Record

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Hafthór Björnsson—otherwise known as “The Mountain” from Game of Thrones—is living up to his nickname. He won the World’s Strongest Viking competition over the weekend, carrying a 30-foot, 1,433-pound log five steps, breaking a 1,000-year-old record in the process, according to IronMind.

Björnsson took to Instagram to celebrate his victory and explain the origins of the challenge: “The legend of the Icelander Orm Storulfsson says that he walked three steps with this MONSTER WOODEN LOG which weighs over 600kg’s/1320lbs! It took 50 mere mortals to help him placing it on his back! After he took his third step his back broke under the enormous pressure and he was never the same after that!”

With this victory under his belt, Björnsson says he’s setting his sights on the World’s Strongest Man competition. And much like a character in George R.R. Martin’s fantasy universe, Björnsson ended his Instagram speech with an epic war cry: “NOTHING CAN STOP ME!! NOTHING CAN BREAK ME!!”

Read next: The World’s Largest Shoe and 10 Other Odd Guinness World Records

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See The Real-Life People Who Inspired Game of Thrones Characters

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From left: Cersei and Margaret of AnjouHBO; Getty Images
From Left: Khaleesi and Queen Elizabeth I.HBO; Getty Images
From Left: Melisandre and Bloody MaryHelen Sloan—HBO; Getty Images
From left: Talisa Stark and Anne Boleyn.Helen Sloan—HBO; Getty Images
From left: Brienne of Tarth and Joan of Arc.HBO; DeAgostini—Getty Images
Portrait of Henry VIII. By Hans Holbein Date c. 1540. Henry VIII (28 June 1491 - 28 January 1547) was King of England from 21 April 1509 until his death. He was also Lord of Ireland (later King of Ireland) and claimant to the Kingdom of France.
From left: Henry VIII and Robert Baratheon.HBO; Getty Images
From left: Joffrey and Caligula.HBO; De Agostini—Getty Images

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Write to Nolan Feeney at nolan.feeney@time.com