Get a giant stick. Shape a big stone. Put the stone in the stick and you have a celt stone axe made without any tools other than what nature gave you. Watch as Primitive Technology uses rocks to sharpen rocks and then fire to burn a hole into a large stick and then put it altogether so that it’s strong enough to chop down a tree. Sticks and stones break bones.
This article originally appeared on Sploid, a Gizmodo blog of delicious brain candy