Prehistoric fire lighter stones



Prehistoric fire lighter stones

Two prehistoric stones with worn out holes in them. It's obvious that they where used to light a fire. To make (prehistoric) fire we need three elements, fuel, oxygen and an ignition source. About oxygen we need not to worry because this is enough in the ambient air. If we make a fire it is important that we have a fuel which can ignite. By blowing (ie supply of oxygen) and addition of combustible material it should be possible to light a fire.