The Thornborough Henges 71
Image by goffik
The Thornborough Henges

Setting

"and restoration of what has already been ripped out"

If you Google Quarry and Nature Reserve you get loads of hits. Filling big holes with water is the cheapest solution and gets lots of local support. The existing lakes at Thornboro are bigged up as attracting migratory geese. We'll have to see if the first bird flu in Britain is down to Tarmac.... ;)

That's why I think the viewshed will be a lost cause. Try for it though. Bloody water skiing around the island henges! Just imagine the visitor centre there :- "Fred Flintstone's Water Park"