Montenegro ranges from high peaks along its borders with Serbia, Kosovo, and Albania, a segment of the Karst of the western Balkan Peninsula, to a narrow coastal plain that is only 1.5 to 6 kilometres (1 to 4 miles) wide. The plain stops abruptly in the north, where Mount Lovćen and Mount Orjen plunge into the inlet of the Bay of Kotor.
Montenegro’s large karst region lies generally at elevations of 1,000 metres (3,280 ft) above sea level; some parts, however, rise to 2,000 m (6,560 ft), such as Mount Orjen (1,894 m or 6,214 ft), the highest massif among the coastal limestone ranges. The Zeta River valley, at an elevation of 500 m (1,600 ft), is the lowest segment.
The mountains of Montenegro include some of the most rugged terrain in Europe, averaging more than 2,000 metres (6,600 feet) in elevation. One of the country’s notable peaks is Bobotov Kuk in the Durmitor mountains, which reaches a height of 2,522 m (8,274 ft). Owing to the hyperhumid climate on their western sides, the Montenegrin mountain ranges were among the most ice-eroded parts of the Balkan Peninsula during the last glacial period.
Internationally, Montenegro borders Croatia, Bosnia and Herzegovina, Serbia, Kosovo, and Albania. It lies between latitudes 41° and 44°N, and longitudes 18° and 21°E.
Durmitor National Park 390 square kilometres (39,000 ha)
Biogradska Gora 54 square kilometres (5,400 ha)
Lovćen National Park 64 square kilometres (6,400 ha)
Lake Skadar National Park 400 square kilometres (40,000 ha)
Prokletije National Park 166 square kilometres (16,600 ha)
Longest beach: Velika Plaža, Ulcinj – 13,000 m (8.1 mi)
Highest peak: Zla Kolata, Prokletije at 2,535 m (8,317 ft)
Largest lake: Skadar Lake – 391 km2 (151 sq mi) of surface area
Deepest canyon: Tara River Canyon – 1,300 m (4,300 ft)
Biggest bay: Bay of Kotor
Deepest cave: Iron Deep 1,169 m (3,835 ft), exploring started in 2012, now more than 3,000 m (9,800 ft) long.
Montenegro is a member of the International Commission for the Protection of the Danube River, as more than 2,000 km2 (772 sq mi) of the country’s territory lie within the Danube catchment area.