Griffin and Tyrrell

The above picture shows Ivan Tyrrell (seated) and Joe Griffin, at Brownshill Dolmen, a megalithic portal tomb in Ireland (5,500 - 6,000 years old).  The capstone weighs an estimated 100 tons and is reputed to be the heaviest in Europe.

"A theory that is wrong generates complexity and encourages obscurantism. A theory that is right always brings greater clarity with it because it reveals more of reality." 

From their new book