The 35 km long Mendola Ridge with its eponymous pass represents the natural border between South Tyrol and the Trentino.
The 35 km long Mendola Ridge (Mendelkamm, in German - Costiera della Mendola, in Italian) is part of the Nonsberg Group and stretches from the Palade Pass (1,518 m a.s.l.) above Lana to Mt. Macaion near Bolzano, where it makes a bend and traverses the south of South Tyrol with famous peaks such as Mt. Penegal, Mt. Roen and the Mendola Pass, the local mountain of Caldaro and popular holiday resort since the 19th century. One of the main characteristics of this mountain ridge is its steep face eastbound, while towards the Val di Non valley its decline is rather soft.