Everyone knows that Hafþór 'Thor' Björnsson, AKA Ser Gregor 'The Mountain' Clegane, is one beast of a man but that wasn't always the case as this photo that's been unearthed from his basketball days ten years ago shows.

If you weren't familiar with the work of the 6 foot 9 inch strongman, here he is in full beast mode deadlifting weights up to a whopping 410kg.

But before all that, back in 2006, he was playing basketball for K.R. Basket Reykjavík in his homeland of Iceland. It's hard to believe that A. He's only 27-years-old, and B. This is what he looked like ten years ago.

What a difference some (okay, a lot) of weights make...

Via Buzzfeed