Pirin Mountain is a prominent mountain range located in southwestern Bulgaria. It is part of the Pirin National Park, which is recognized as a UNESCO World Heritage Site. The mountain features stunning landscapes, including rugged peaks, deep valleys, and glacial lakes. The highest peak, Vihren, rises to 2,914 meters, making it the second highest in Bulgaria. The region is known for its rich biodiversity, hosting various plant and animal species, some of which are endemic. Popular activities in Pirin include hiking, skiing, and rock climbing, attracting outdoor enthusiasts year-round. The area also has cultural significance, with historical sites and traditional villages nearby.