Stonehenge Quarry Found

Craig Rhos-y-felin: a Welsh bluestone megalith quarry for Stonehenge

Mike Parker Pearson,Richard Bevins,Rob Ixer,Joshua Pollard,Colin Richards,Kate Welham,Ben Chan,Kevan Edinborough,Derek Hamilton,Richard Macphail,Duncan Schlee,Jean-Luc Schwenninger,Ellen Simmons and Martin Smith (2015).   
Antiquity, Volume 89, Issue348, December 2015,                      pp 1331-1352

http://journals.cambridge.org/action/displayAbstract?aid=10057091