The mountainous northern part of the region belongs to the Southern Limestone Alps. From west to east, the region's highest peaks are, in the Carnic Prealps (Dolomiti Friulane)—the Cima dei Preti, , Duranno , and Cridola ; in the Carnic Alps—Peralba , Monte Bìvera and Coglians ; in the Julian Alps, the Jôf Fuârt , the Jôf di Montasio , Mangart , and Canin , which dominates the plain.