Atlantis Found. Again.
Tufriast writes "Paul McCartney and Mythic eat your heart out! BBC News has an interesting revelation regarding the lost city of Atlantis: "American researchers claim to have found convincing evidence that locates the site of the lost kingdom of Atlantis off the coast of Cyprus."" Hey, here's an idea: The idea of an almost mythical lost civilization is common thread throughout all old human societies - much like, say, really big Floods. Perhaps there could be more then one story that fits? But, no, that wouldn't be a simplistic enough answer to be sound-bitten into oblivion.
Yeah, the Stonehenge wasn't too hard for the Jedi-Druid Masters of Ank-Morpork. Especially not after they built the Great Wall of China and the Pyramids.
It is well known that after building these they leveled Atlantis for the heresy of saying that Cthulu was really Buddha.
And your dates are wrong too--everyone knows that the Jedi-Druid FunkMasters of Ankh-morpork visited the kings of England around 100,000 BC, when they named Arthur king of the Brittains and gave him the magical European Swallow (not to be confused the the African Swallow).
"We don't know what we are doing, but we are doing it very carefully,..." Wherry, R.J. Personnel Psychology (1995)