Ancients had measure of Stonehenge
I found this article fascinating. To think that the puzzle of what the Folkton Drums were used for has been potentially solved in such a simple way. It is surely too much of a coincidence to think that they all happen to come out the same length if used in a certain way and that Stonehenge is constructed in a way that is based on this measurement.
To think that the builders of Stonehenge were using the properties of circles to measure is remarkable. Professor Chamberlain makes a good point about the accomplishments of ancient civilisations being underrated if that particular civilisation did not have a literary tradition.