The author examines in detail the geometric inscriptions found on the two large Anglesey megaliths of Barclodiad y Gawres and Bryn Celli Ddu and draws commparisions with similar monuments on the other side of the Irish Sea, in particular the iconic carvings at Newgrange.  He also reports on lesser known Welsh rock art in the form of cupmarks and the enigmatic figure carvings on the Llywell and Blaenawen stones.  Illustrated wtih b&w photographs and excellent drawings.  Paperback.  148 pages.  New condition.  Cat No 4082