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.
It is about this time that probably some of the big game such as bison, wooly rhinocerus, and mammoth would have been hunted to extinction while the lions who hunted these prey became extinct also.
The hunters then probably turned to horses and the giant irish deer for food.
The sails would have likely been made from the skins of the giant irish reindeer with the skins being scraped clean and sewn together.
It's also possible the skins would have been made from smaller reindeer hides, but this seems unlikely since the hunters had sought and favoured the larger irish reindeer, and the coracle placed on top of the raft would have been too small.
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.