With no hesitation, Dennis immediately jumps into the theories of origin for the site and drops a lot of information in a short amount of time. So be ready. One of the first points that Dennis Stone covers is the age of the site. Through the use of many different methods, some of which are technologically astounding, it has been determined that the site is approximately 4000 years old! A construction project from 2000 B.C. puts the 240-year history of the US in perspective doesn’t it?