Cave del Predil is a frazione subdivision of the comune of Tarvisio in the Province of Udine, in the Friuli-Venezia Giulia region of northeastern Italy. The hamlet is located about 15 km south of the Tarvis town centre, in the valley of the Rio del Lago between the Montasio and Mangart massifs of the Julian Alps. The parallel road runs further up to the picturesque L…Cave del Predil is a frazione subdivision of the comune of Tarvisio in the Province of Udine, in the Friuli-Venezia Giulia region of northeastern Italy. The hamlet is located about 15 km south of the Tarvis town centre, in the valley of the Rio del Lago between the Montasio and Mangart massifs of the Julian Alps. The parallel road runs further up to the picturesque Lago del Predil and the Sella Nevea mountain pass. An eastern branch-off leads to Predil Pass at the border with Slovenia. A 4,844 m long tunnel under the pass, built in 1905 and originally used for water drainage and later for transport of miners and political refugees escaping from communist Yugoslavia, connects it with Log pod Mangartom.