I don't have anything, really, to say about this, but I thought our readers would be interested. This drawing is from a 15th-century manuscript of the Scala Mundi, a world chronicle. There are two earlier drawings of Stonehenge, but as the Guardian explains, "the Douai drawing is unique in attempting to show how the monument was built."
I suppose because I think of the Middle Ages as a time in which hermetic imaginative constructions were the prevalent mode of thought--i.e., come up with an idea (the Host is the actual body of Christ, bears lick their cubs into shape, &c) and run it to the ground, scorning any empirical intrusion--I'm always a bit surprised when something like this turns up: other such surprises include Frederick II's expedition into the North to determine the truth about barnacle geese (conclusion: barnacles don't actually turn into geese) and Matthew Paris's drawing of an elephant, surely the first realistic drawing of an elephant in Western Europe since the Romans. Here's the elephant, which belonged to Henry III:
That's all I have in me on Stonehenge, folks. Run with it, and see what you come up with.