Archeologists have discovered what they believe is a 'prototype' for Stonehenge - just three miles from the world-famous site. The stone structure in Wiltshire dates back to around 3000BC, and is thought to have been carefully placed to line up with the sun, around 500 years before construction began at Stonehenge. The archeologist who led the search described it as one of the greatest finds of his career. #Stonehenge #Archeology #Discovery #News #Channel4News