It is the only cave system in Europe featuring an accessible underground river navigable by boat.
Evidence of human occupation dating back to the Middle Neolithic period has been recovered from the cave's vestibule.
The cave hosts a unique subterranean bridge used during the Bronze Age.
The name 'Grotte dell'Angelo' originates from the medieval tradition of dedicating the cave to the Archangel Michael.
The river that feeds the cave originates from the Tanagro River, which disappears into the limestone massif.
The cave system serves as a natural laboratory for studying subterranean micro-climates and bat colonies.
Ancient pottery shards found on site are displayed within the Mida Foundation's specialized museums nearby.
The Pertosa-Auletta Caves, also known as the Grotte dell'Angelo, represent the only site in Europe where visitors can navigate an underground river by boat. Located within the Alburni Mountains, the karst system spans approximately 3,000 meters in length. The tour begins with a short boat ride across the subterranean Negro River to reach the internal halls. These chambers contain massive stalactites and stalagmites formed over millions of years. Archaeological excavations have identified a Bronze Age pile-dwelling settlement inside the cave entrance. The complex is managed by the Mida Foundation and serves as an active geological research site. Air temperatures inside remain constant throughout the year, typically hovering around 15 degrees Celsius.
The initial boat embarkation point on the underground river.
Bring a warm jacket regardless of the outside temperature, as the cave maintains a constant 15 degrees Celsius.
Wear comfortable, non-slip footwear as the cavern floor is consistently wet and slippery.
Book your entry slot online in advance, as group sizes for the boat portion of the tour are strictly limited.
Do not attempt to touch the stalactites or stalagmites, as natural skin oils permanently damage the formation process.
Open year-round, but tour frequency varies significantly between the peak summer season and winter months.
Flash photography is prohibited to protect sensitive cave formations and local bat populations.
