Probably a tool for making rope. And that is very interesting because rope is one of the most useful of all human inventions. This is Chris Stringer of the Natural History Museum in London, who recently identified other Paleolithic objects from Gough Cave in England as tools of the same type:
A lot of attention has been given to the importance of our abilities to make specialised stone tools and to use fire as being key elements of the prehistoric success of Homo sapiens. But in many ways, the ability to make string and rope out of animal tissue and plant fibres was every bit as revolutionary in its impact at the time. It opened up all sorts of new avenues for exploiting the natural world, from the weaving of baskets to the construction of bows and arrows.
Or attaching sails to boats or a thousand other things.