One of the most important attractions in Apulia are the caves of Castellana Grotte, a system of caverns of the karst origin. Stalagmites, stalactites, canyons and caves characterise this pathway long 3 km to more than 60 meters deep. The Grotte of Castellana were discovered January 23, 1938 by cavers Franco Anelli and Vito Matarrese with the help of a little boy named Giovanni Mansueto who they sent down in search of the caves.