Durmitor National Park, a UNESCO World Heritage site, comprises the Mount Durmitor plateau and the valleys formed by the canyon—Europe’s deepest—of the Tara River. The park’s most significant feature is its wide plateau, situated 1,500 meters (4,921 feet) above sea level, and its deep canyon valleys which are surrounded by impressive mountain peaks: 48 of which measure 2,000 meters (6,562 feet) or greater in elevation. The parks’ highest peak, Bobotov Kuk, lies 2,523 meters (8,278 feet) above sea level. Žabljak, at an elevation of 1,456 meters (4,777 feet)—the highest town in the Balkans—is located just southeast of the park. Durmitor National Park encompasses 39,000 hectares (96,370 acres) and contains many lakes and valleys: principally among these the Grabovica and Komarnica valleys. The Tara River, who’s length is 156 kilometers (97 miles), has through the eons carved a 93 kilometer (58 mile) long canyon who’s deepest point measures some 1,300 meters (4,265 feet). Among its 18 glacial lakes, known locally as the “Eyes of the mountain,” Black Lake (Crno Jezero) is the biggest and most well known. It is generally blanketed by snow in the winter, but is a much visited swimming spot in the summer. Another of the parks unique features is the Ice Cave which contains many stalactites and stalagmites. This cave can be accessed year-round.