According to a archaeologist ive spoken to the stone axe was used for fallen trees but not in the traditional manner that we know . They would set fires around the trunk of the trees they wanted down and burn them for days and as they were burning every so often they would remove the burnt charcoal with the stone axe until the tree falls. Relf25, it sure is a cool stone for sure but doesnt look man made from what i can see by the pic. Mother nature sure does some unusable things.