Is Stonehenge a stone hinge?

Contemporary science and ancient myths combine to show how prehistoric man knew of parallel universes.Not from theoretical quantum models but from face-to-face interaction with their denizens.
Over the last forty years television series and movies focused on the public's thirst for inexplicable phenomena. The growing number of books devoted to works explaining everything from UFO's to Stonehenge are testaments of continuing and increasing interest.
Each theory is specialized, honed to explain a specific mystery. Each generates more opponents than supporters.
What if a single theory unified and explained a majority of these enigmas? What if the same theory reached back into our past and demonstrated ancient people dealt with these same mysteries? Otherworld presents such a theory, a theory born from a single question: What if Stonehenge really was a stone hinge?