If you said, 7,500 years ago...”Jim, there’s this great valley three days walking from here...lots of ale, XXL beef-steaks, and some mystic ceremony stuff, and we only need to trade a bushel or two of apples for two days of excitement and adventure”.....man, I’d join up with you and do the Amesbury walk.
Go look at Loch Ness....tens of thousands of folks come monthly...just to look at some lake with a wannabe lake monster, and some local ale. The Brits know how to market and do it well.
Oh yeah! It has been known for a while now that Stonehenge was a pilgrimage sight (much later in time then we are talking about). I am sure the destination was awesome and there were tourist traps every step of the way...