This will allow us to put the pieces together and build a detailed picture of Mesolithic lifestyle.

BBC: Artist's impression of the house

The two conflicting schools argue over an early entrance - (Mesolithic, about 30, 000 years ago) or late (Neolithic, about 8, 000 years ago).

BBC: What is anthropological genetics?

The oldest ski artefacts, though, come from the more recent Mesolithic period.

BBC: Where did skiing come from?

The university archaeology department head, Prof Martin Bell, said the Severn Estuary was exceptional in its evidence of the plants used by Mesolithic people, thousands of years before farming began.

BBC: Footprint