Velebit is the largest though not the highest mountain range in Croatia. Its highest peak is the Vaganski Vrh at 1757 m. The range forms a part of the Dinaric Alps and is located along the Adriatic coast, separating it from Lika in the interior. Velebit begins in the northwest near Senj with the Vratnik mountain pass and ends 145 km to the southeast near the source of the Zrmanja river reasonably near Knin. This is a mountain range between Lika and the Adriatic sea whose tallest summit is Vaganski Vrh (1,758 m).
There are three crossings over the Velebit: Vratnik - 698 m, Prosina - 789 m and Vrata - 927 m. due to its exceptional natural diversity and treasures, Velbit has been listed as an international biosphere reserve by the UNESCO charter. In 1981, the entire mountain with a total area of around 2,000 square kilometers has been declared a natural park. The greatest concentration of attractive sites and localities of Velebit is to be found in its northern part, between the Vratnik and Great Alan passes.
Zavizan with a special reserve and botanical gardens is especially interesting. A pathway called Premužićeva staza (Premužić's pathway) leads through the northern and middle parts of Velebit. This pathway was built between 1930 and 1933 and it connects northern and southern Velebit. Its length is 50 km. Many parts of Velebit would not be reachable without it. The Velebit mountains are transversed by the A1 through the Sveti Rok Tunnel.