Grotta Su Marmuri

The limestone formations within the cave extend for 850 meters in depth, with walls reaching heights of 70 meters at certain points.

The extensive network of chambers and tunnels formed approximately 150 million years ago through the persistent action of an underground river system.

The name Su Marmuri originates from the local Sardinian language, referring to the marble-like appearance of the polished limestone surfaces inside.

Visitors need to climb 200 steps to reach the entrance at 880 meters altitude and should bring warm clothing for the 10°C temperature inside.

The cave houses one of Europe's largest bat colonies and features the Great Hall with stalagmites extending 28 meters toward the ceiling.

Location: Ulassai

Address: Piazzale Grotte sui Marmuri

GPS coordinates: 39.81540,9.48685

Latest update: March 6, 2025 13:17