Agree with Sardog1. The hair is bleached from sun and several winters. We came across a similar spot in the Quarry/Rand area a couple of years ago, and it was full of moose bones as well. When we returned most of the bones were gone, but the hair remained. Seemed like a long way into the woods to have been hunted, but there was also significant logging in the area that would have made it possible to extract the meat with an ATV or snowmobile. Not sure if it was hunted and cleaned, or died of something else as it was already to the point where the bones were bleaching...
KDT