The Castellana Caves are a remarkable karst cave system located in the municipality of Castellana Grotte, in the province of Bari, Apulia. They are one of the most famous show caves of Italy.
The caves, discovered in 1938 by the speleologist Franco Anelli , are situated 1 km south of Castellana and are served by the (Grotte di Castellana railway station) on the FSE line Bari-Putignano-Martina-Taranto. The entrance is represented by an enormous vertical tunnel 60 meters-long. The main cave is named "La Grave" (as abyss) , and others are named Black Cavern (Caverna Nera), White Cave (Grotta Bianca) and Precipice Cavern (Caverna del Precipizio).