Isn’t it amazing that something as well-known as Stonehenge can still have things discovered about it? It’s like the controversy over the age of The Great Sphinx of Giza. Egyptologists say it was built about 2900BC, but geologists look at the rock and surrounding strata and say it was built about 5500BC, only a 26 century difference in data. No one knows of a civilization that early with the competence to build such a structure. Maybe the Sphinx is like some humongous Hello Kitty toy that the giant inside the Earth is holding. If you think about it, Egypt is about where one of his hands would be.
Gives a more ominous meaning to the notion that we should tread lightly on the Earth.