the system of strongholds built by the Wislanie tribe in the 9th century on the Southern border of their lands. Also, one can find small, wooden Orthodox churches, which were built by the eastern Slavic Lemkos. Unfortunately, some of these buildings are ruined. In one of the farmers’ huts, at the village of Kolonia Olchowiec, there is a small, private museum of Lemko culture. There are also numerous cemeteries from World War I, as this area was for a long time a battleground between the Russian and Austro-German armies. A tragic reminder of World War II is the cemetery of 1250 Jews, who were killed by the Nazis in 1942 at the Halbów pass. The park has its headquarters in the village of Krempna. References National parks of Poland Protected areas established in 1995 Protected areas of the Eastern Carpathians Parks in Lesser Poland Voivodeship Parks in Podkarpackie Voivodeship 1995 establishments in Poland Gorlice County