By Tanner Garrity The world’s strongest man just lifted what we have to assume is one of the world’s heaviest stones. Hafthor Björnsson, the 33-year-old Icelander better known as “Thor,” or “The Mountain,” the nickname for his monstrous character Gregor Clegane in Games of Thrones, is one of the most decorated strongmen of all time, and depending on who you ask, the strongest human being to have ever walked the planet. His most recent feat, though, is a reminder that supernaturally strong folks have been around for a long time, and especially up in the unforgiving environs of Iceland. In a rec…