Without question now the definitive book on the astronomical alignment of prehistoric standing stones and stone circles still found widely across the British Isles.  Astonishingly comprehensive and wide-ranging, the author expertly synthesises all previous knowledge, that first initiated by Gerald Hawkins' 'Stonehenge Decoded' in 1965 and by Alexander Thom's ground-breaking 1967 book 'Megalithic Sites in Britain'.  He also reinforces the truce between astronomers and archaeologists whose opinions had long been at odds.   The book continues to record in immense detail extent of prehistoric man's mathematical ability and the breadth of his influence on sacred geometry across the British landscape.   Mathematical theories are explained, statistical analyses undertaken and the scope for future research explored.  Lengthy lists of stone monuments are included, categorised by type, and with full location map references, as is a substantial bibliography citing all old and recent sources.  The book is a monument itself and indispensable for the serious professional and the interested amateur alike.   Illustrated throughout with photographs, site maps and graphs.  Hardback.  286 pages.  In new pristine condition in its original card slipcase.  Cat No 4735