Emissarium of Lake Nemi, Ancient canal system in Genzano di Roma, Italy.
The Emissarium extends for 1650 meters underground, connecting Lake Nemi to the Ariccia crater through an advanced water management system.
Romans built this engineering structure before 300 BC to regulate water levels in Lake Nemi, preventing floods and creating additional land around the shore.
The tunnel system demonstrates Roman architectural techniques through its opus quadratum blocks and specialized filtering mechanisms to maintain water flow.
Visitors can observe the entrance points of the underground canal system by following marked paths near the Lake Nemi archaeological area.
The emissary tunnel incorporates multiple inspection shafts and maintenance access points, revealing Roman knowledge of hydraulic engineering principles.
Location: Genzano di Roma
GPS coordinates: 41.71293,12.69035
Latest update: March 6, 2025 08:17
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