Pat, I don't know about this one, but others have been found and they were sinew wrapped and some had a thin birch bark wrapping covering the sinew. They are so well preserved after so many years in the snow and ice, but it is rare to find complete ones. They are barrel shaped with a flared nock end.
Because the ice is retracting and melting things are found at the ice edge. Reindeer have used the same paths in these mountains for thousands of years and the arrows have most likely been lost by hunters.