Catania Underground Tunnels

Overview

Catania Underground offers guided tours through the labyrinth of lava tunnels, ancient cisterns, and aqueduct channels hidden beneath the city streets. These subterranean spaces reveal how successive lava flows, earthquakes, and urban rebuilding created a hidden second city underfoot.

Highlights

• Lava tunnels: Walk through natural tunnels formed by rivers of molten rock from Etna's eruptions flowing to the sea.
• Ancient aqueducts: Roman and medieval water-supply systems still partially intact below the modern city.
• Multi-era layering: Some tunnels reveal Greek, Roman, and 18th-century construction in a single passage.

History

Catania has been built, destroyed, and rebuilt at least seven times — each time on top of the previous layer. Lava flows from Etna (especially in 1669) created natural tunnels as the molten surface cooled while lava continued flowing beneath. These spaces were later used as water channels, bomb shelters during WWII, and informal storage.

Visitor Tips

• Tip 1: Tours depart from the Amenano River mouth near Piazza del Duomo — book ahead as groups are small.
• Tip 2: Wear closed-toe shoes and a light jacket — the tunnels are cool year-round.
• Duration: 50–70 minutes.