The park has a limestone Balkan landscape, with its lakes, waterfalls, caves and pine forests, and a rich flora containing many endemic plant species. The rugged mountains, with around seventy glacial lakes scattered throughout them, are a relic of the ancient glacial days of Europe.
The park is protected by the Unesco World Heritage program.
There are several hikes through the park, but for less experienced hikers look at my other entry about skiing teacher/ hiking guide.
For More info: http://www.wcmc.org.uk/protected_areas/data/wh/pirin.html