Caves of Portovenere
Portovenere has 34 catalogued caves, including 2 potholes and 29 caves. The longest is Fossa del Tinetto (60 m) and the deepest is Pozzo dei Colombi (40 m).
34 caves
456 m total length
40m max depth
Length adds each cave once (a system counts once), and depth is that of the deepest cave, canyons excluded. Without length data: 10. Without depth data: 8. Without known lithology: 34.
The 20 longest
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The 20 deepest
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34 of 34