We know that monuments were tightly integrated with the wider landscape and that none existed in isolation. Recording the location of destroyed sites is useful for those adventurers that like to search for surviving remnants. 'David's Cairns', for instance, were probably horizon foresights for a circle or row that is now lost. The Carlaton Mill stone row, in Cumbria, is completely gone now but I'm sure somebody spending time on the ground will turn up cairns, mounds and stones that were on the periphery.

I've listed three destroyed circles on here, one is mentioned in Fieldnotes, another I've altered to (site of), but this one ( http://www.themodernantiquarian.com/site/3299 ) needs stone circle deleting from the title and (site of) substituting for (Destroyed). I can't log in on that id any longer - still got the mittens though ...