Settled in prehistoric times, the south-eastern Poland region that is now Bieszczady was overrun in pre-Roman times by various tribes, including the
Celts,
Goths and
Vandals (
Przeworsk culture and
Puchov culture). After the fall of the Roman Empire, of which most of south-eastern Poland was part (all parts below the
San),
Hungarians and
West Slavs invaded the area. The region subsequently became part of the
Great Moravian state. Upon the invasion of the
Hungarian tribes into the heart of the Great Moravian Empire around 899, the
Lendians of the area declared their allegiance to the Hungarians. The region then became a site of contention between Poland,
Kievan Rus and Hungary starting in at least the 9th century. This area was mentioned for the first time in 981, when
Vladimir the Great of
Kievan Rus took the area over on the way into Poland. In 1018 it returned to Poland, 1031 back to Rus, in 1340
Casimir III of Poland recovered it. Bieszczady was one of the strategically important areas of the Carpathian mountains bitterly contested in battles on the
Eastern Front of World War I during the winter of 1914/1915. Up until 1947, about 75% of the population of the Polish part of the Bieszczadzkie Mountains was
Boyko. The killing of the Polish General
Karol Świerczewski in
Jabłonki by the
Ukrainian Insurgent Army in 1947 was the direct cause of the replacement of the Boykos, the so-called
Operation Vistula. The area was mostly uninhabited afterward. New Poles settled in the Bieszczady, joining the Poles living in the Bieszczady area before 1947, but the area became much less populated than before 1947. In 2002, then president
Aleksander Kwaśniewski expressed regret for this operation. In 1991, the
UNESCO East Carpathian Biosphere Reserve was created that encapsulates a large part of the area and continues into Slovakia and Ukraine. It comprises the
Bieszczady National Park (Poland),
Poloniny National Park (Slovakia) and the Uzhansky National Nature Park (Ukraine). Animals living in this reserve include, among others,
black storks,
brown bears,
wolves and
bison. ==Hiking trails==