Across the plain of Ilium stood a great city ready to repel any assault and weather any siege. Over the past year, under the supervision of Priam and Hector, Troy’s already mighty walls had been reinforced and a network of secret tunnels and inland waterways dug. Seaports and trading stations could be reached by river as well as by tunnel. The city was in no danger of being starved into submission. Watchers on the ramparts had a full 360-degree field of vision from which to survey the land around and warn of incoming hostile troops.