Might be worth noting that the Stonehenge complex is much larger than the henge itself, and isn’t particularly well researched yet:

https://en.wikipedia.org/wiki/Durrington_Walls?wprov=sfti1

https://en.wikipedia.org/wiki/Stonehenge,_Avebury_and_Associ...

These also sit in a grander context of a European wide network of structures which we are only starting to grasp an understanding of.