For those who live in Cornwall.....
'Carwynnen Quoit, or Giant's Quoit, a 5,000-year-old burial chamber near Troon, collapsed in 1966.
The first stones are due to be re-erected by owners the Sustainable Trust which bought the site in 2009. The cap stone will be replaced on 21 June.
Restoration follows a series of archaeological digs to establish how the scheduled ancient monument should be reassembled.'
http://www.bbc.co.uk/news/uk-england-cornwall-27248223?
See also on the r/h side video of 2012 moving of stones....