Neil Oliver travels back to ice age Britain as he begins the epic story of the evolution of the land and its occupants over thousands of years of ancient history. In this episode he describes a struggle for survival in a brutal world of climate change and environmental catastrophe.

Neil Oliver continues the story of how today's Britain and its people were forged over thousands of years of ancient history. It's 4,000 BC and the first farmers arrive from Europe, with seismic consequences for the local hunter-gatherers.

Neil Oliver continues his journey through the world of Ancient Britain as he encounters an age of cosmological priests and some of the greatest monuments of the Stone Age, including Stonehenge itself. This is a time of elite travellers, who were inventing the very idea of Heaven itself.