I feel a major thread-subversion coming on...
"OK, I presume it's known about but not by the general public, which is absolutely extraordinary."
Everything about the collective indifference to British pre-history seems extraordinay to me. I went to visit the Devil's Arrows near Boroughbridge yesterday. I expected to see one of those brown heritage signs directing me to them, but no such luck. I asked several people, but they hadn't even heard of them and looked at me as though I was slightly mad. I eventually found someone who pointed me along the right road. When I saw them I was staggered. Millstone grit giants poking 20 feet out of the ground and every bit as impressive (and heavy) as the massive trilithon uprights of Stonehenge, but seemingly ignored by the local population.
There was a small plaque next to one of the stones informing me that they had probably been dragged from Knaresborough around 2700BC. Looking up at the beast I was more convinced than ever that talk about dragging stones of this size is total nonsense. But more than that, why do we British treat these amazing accomplishments of our ancestors with such apathy?