Yes, the U.K. ancients really had a thing for megaliths and menhirs. They were obviously sophisticated people to have carved and erected so many. The trouble is, if they were simple hunters and gatherers, would they have needed to do this? I could understand that they might be expert trackers and know how to use the stars, moon and sun but they clearly had uses for the celestial bodies that we're unaware of.
I get the same feeling with the so-called Anasazi sun dagger:
Would hunter-gatherers or simple farmers have needed something this sophisticated? How did they even build the damned thing?? Three big slabs stacked next to each other to let in little slivers of light to travel across a carved spiral to mark the solstices and the equinoxes. Even more amazing, though, is that it marked the major and minor lunar standstills and would tell you how far you were from the last one and how close to the next by counting the grooves in the spiral where a shadow fell on it. It also marked the true full moon which only occurs every 19 years when the the lunar face is most exposed to the sun--other full moons are somewhat less than that. It is the only ancient observatory in the New World that tracks both sun and moon equally well. Why would they need to know these things and how did they get the idea to erect these slabs to get that information?? And then how did they erect and position these slabs which are on top of a tall butte.