The Scots inside Stirling Castle protected by a massive stone fortress, prepared for a long drawn-out siege against the army of England's Edward the First. Fifty carpenters worked day and night to create the fourteenth century version of the atom bomb: the trebuchet--a fearsome, gravity-powered catapult dubbed "Warwolf" that was capable of hurling boulders, bee hives and plague-infected corpes long distances. Travel back to the Middle Ages to relive a fascinating turning point in warfare and medieval history.

Caution: near the end of video men "moon" the camera.