Three Forgotten Roman Megaprojects

The longest tunnel in ancient history. A highway suspended over a raging river. A secret harbor for the Roman navy. These are three of the most impressive Roman engineering projects that you've probably never heard of. Check out my other YouTube channels, @scenicroutestothepast and @toldinstonefootnotes Please consider supporting toldinstone on Patreon: If you liked this video, you might also enjoy my book “Naked Statues, Fat Gladiators, and War Elephants: Frequently Asked Questions about the Ancient Greeks and Romans.” If you're so inclined, you can follow me elsewhere on the web: Chapters: 0:00 Introduction 1:24 The Tunnel of Claudius 4:33 The Iron Gates Highway 7:16 The Secret Harbor at Lake Avernus