ItalyThe Tunnels of Claudius are a 6 km Roman engineering complex in Abruzzo, Italy, constructed by Emperor Claudius by 52 AD to partially drain Fucine Lake [1]. The project employed 30,000 workmen and slaves over 11 years, making it one of antiquity's largest tunneling endeavors [1]. Originally intended to protect riparian villages from flooding and create arable land, it remained the world's longest tunnel until the Fréjus Rail Tunnel opened in 1871 [1].
Tunnels of Claudius
| Type | Megalithic structures |
|---|---|
| Period | 1 - 500 AD |
| Country | Italy |
| Coordinates | 41.9887° N, 13.4334° E |