You know what would have been hard? Building Stonehenge. In fact, historians and archaeologists have puzzled for centuries over how it was built. But now they need wonder no more. Justin Pollard, in this year’s QI Annual, has created some IKEA-style instructions for creating your very own, life-size Stonehenge. All you’ll need is some giant rocks, a wizard, and some beers to enjoy once the work is done. Check out “Hënj” after the jump.