Places0
Cave·Easy·Scenic·Hidden gem
Grotta di Seiano, Posillipo
Campania
The Grotta di Seiano (also called Crypta Neapolitana) is a 770 m tunnel carved through the tuff hill of Posillipo to connect the Roman villas on both sides — built in the 1st century BC. The tunnel is 5 m wide and up to 15 m tall, entirely carved by hand. It was used continuously until the 18th century. Access is via guided tour only (Park of Posillipo). Dogs on leash.
Duration
1.5 hours
Distance
2 km
Best season
Year-round
Highlights
- 770 m hand-carved Roman tunnel — 1st century BC
- 5 m wide, up to 15 m tall — entirely by hand
- Access only via guided tours of the Posillipo park
With your dog
Roman tunnel; dogs on leash.
