The following pages are reproduced by kind courtesy of Tony Johnson, whose book, 'Solving Stonehenge'
(books.php) gives an illuminating view into Stonehenge's planning, construction, history and repair.
This computer-generated isometric view of Stonehenge, in its present state from the south-east, is enhanced by the plan on the
next page, which carries a clever key to the materials used and a measure to indicate scale.
The numbering sequence of the stones was introduced by Flinders Petrie in 1877 and continues in use today. The Sarsen circle is numbered 1 -30 with the lintels numbered 100 higher than their highest numbered supporter. (29-30 topped by 130; 1-2 with 102 etc.)