Vihren is the highest peak of Bulgaria's Pirin Mountains. Reaching 2,914 metres, it is Bulgaria's second and the Balkans' third highest, after Musala and Mount Olympus. Although Vihren is deprived of lakes and streams due to the karst topography, a number of Pirin's lakes are located around the peak, as is Europe's southernmost glacial mass, the Snezhnika glacieret. Until 1942 Vihren was known as Eltepe; it was also called Buren and Malnienosets.