It flowed into the sea about 150km north of its present estuary.
British Museum archaeologist Dr Nick Ashton says, 'The new flint artefacts are incredibly important because, not only are they much earlier than other finds, but they are associated with a unique array of environmental data that gives a clear picture of the vegetation and climate.'Fossil plants, pollen and beetles uncovered at the site show that the river was large and slow-flowing with freshwater pools and marshes, and salt marsh and coast nearby.
The warm period came to an end about 11 000 years ago and a mini ice age followed lasting some centuries, during which the still present glaciers recovered some of thier lost ground.
The famous Irish archaeologist Michael O'Kelly wrote: "In the Post-glacial Stage which commenced about 10,300 years ago the climate again began to improve and thus began the present warm stage' in whic we now live".
The coracle may have had small holes in it to allow for a paddle rudder mounted on an A-frame to steer the raft.
The cut leather surrounding the holes would have been tied around the wooden branches of the A-frame with finer strips of leather.It is likely that the upper palaeolithic or mesolithic hunter-gatherers of the Pyrenees and Andorra Spain ventured to the bay of Bisacy 12 000 years ago and started building thier ocean ships.What these were made of is uncertain, however it's quite possible that they used large logs made from oaks or pine that were doubled on top of one another where they were tied down with soft springy saplings that were split lengthwise and bent over the logs horizontaly to the top and the underside.This Late Palaeolithic population is thought to have been relatively open with regard to mating networks, and mutations could have circulated among the founder populations of Spain and the British Isles.Indeed, during the maximum glaciation at around 18 000 BC, south-west Europe may have served as a refuge area for Palaeolithic populations where the shift in the thermal gradient enhanced offshore fishing on the Cantabrian coast.35 000 years ago the men of southern France and the Basque region hunted the wild bison, wooly rhinocerus, horse, and mammoth where they lived in tepees with the women and not in the painted caves according to popular belief.The women would have gathered wild fruits, seeds, and berries where they brought them back to thier campsite.The rhesus negative blood factor is a recessive phenotype while the O rhesus positive factor is a dominant phenotype.Black wavy hair, brown eyes, copper to brown tanned oily skin are dominant phenotypes which the men who drew these cave paintings most likely possessed.Read more about the discovery on the British Museum, the Natural History Museum, and Nature websites.The original Europeans who carried the rhesus negative blood factor 35 000 years ago are probably the original Europeans who painted the comic strips and other art in the caves of southern France and northern Spain which includes the Chauvet-Pont-d' Arc cave and the Lascaux cave paintings found in the Pyrennes.