I understand that Stonehenge is built at one of the very few places in England where they could build a structure to measure the sun and moon phases and keep that unique design. Even a few miles either way would have thrown it off.
Supposedly, the Earth’s magnetic field is very strong at Stonehenge. Glaciers may have carried the stones to that location.
How would they know that...150 miles is a long ways to travel, seems like.