Pity he has to spoil it with adding his own equally loony take on it .
Why bring Lundy into the equation ? its 5km long which helps with the figures which are not spoton but never mind .Surprisingly he could have added Condicote henge to his missing corner of the rectangle it fits as well as the other rounded sites .
The station stones may well have had an important part in the setting out of of the architecture of Stonehenge , with the centere of the diagonal being the centere of the monument , Anthony Johnson makes out a good case for this . If this is applied to the Heath model the important centre of of the Stonehenge - Prescelli linelies is in the southern suburbs of Caerphilly !