The Thornborough Henges 71
Image by Moth

Many stone rows are now being set up over a long period of time - individual stones being set up by small groups rather than a single grant installation.

The other one is also the Dorest Cursus, but again I'd suggest this did not have the largest number of people in attendance and had a multi phase construction.

That should have read been seen as possibly being set up over long period of time.