Documentary following the final archaeological exploration of the interior of the largest man-made mound in Europe - Silbury Hill, one of our most mysterious prehistoric landmarks. It also tells the story of the people who built Silbury, people whose beliefs drove them to sculpt the landscape of the Avebury area, leaving a legacy of great structures.
Major discoveries help us to understand the monument, revealing that it was built when prehistoric Britain was on the brink of great change.
