Two massive hill forts on the Lizard Peninsula in Cornwall, at Gear and Caer Vallack, have never been excavated. In fact, no major Cornish Iron Age site has ever been investigated. Time Team have been given the tall order of making some sense of these two sites in three days. For many years, a local farmer has been collecting Stone Age and Iron Age artefacts. Already the geophysics results are showing a potential wealth of ancient human activity. But the sites are so huge that the team will have to be very selective. They are joined by Ian Morrison from English Heritage, ancient technology expert Peter J. Reynolds, pottery experts Carl Thorpe and Henrietta Quinnell. Re-enactor David Freeman demonstrates a sling-shot, a simple but effective weapon. Phil and Peter visit a reconstructed round house nearby.