Robson travels from Chollerford to Walltown Crags, and learns more about how the Romans took care of themselves so far from home. He samples natural cuisine and checks out the spa at Chesters Fort, before paying a visit to the latrines of Housesteads Fort, which were once the envy of an empire. He goes on to pit his fishing abilities against an angling rival, gladiator-style, before climbing Steel Rigg to reach the route’s highest summit.