A flint axe was a tool used during prehistoric times to do a variety of tasks. These were at first just a cut piece of flint stone but later handles were attached to these axe heads. Flint axes were also used as a weapon. A modern hammer is directly descended from ancient hand tools A tool or device is a piece of equipment which typically provides a mechanical advantage in accomplishing a physical task, or provides an ability that is not naturally available to the user of a tool. ... Prehistory (Greek words προ = before and ιστορία = history) is the period of human history prior to the advent of writing (which marks the beginning of recorded history). ... This article is about the sedimentary rock. ...