sleeptowin

You will find a useful map of the burial mounds that surround Stonehenge on the Enflish Heritage page at :http://www.english-heritage.org.uk/stonehengeinteractivemap/

Regarding how Stonehenge was constructed try Anthony Johnson's 'Solving Stonehenge' (Thames & Hudson 2008)

It also has a web page on:http://www.solvingstonehenge.com