Vitoshka Bistritsa
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Bistritsa or Vitoshka Bistritsa (Bulgarian: Бистрица; Витошка Бистрица), is a river in western Bulgaria, tributary of Iskar River. Flows from the eastern slopes of Golyam Rezen Peak on Vitosha Mountain, crossing Bistrishko Branishte Nature Reserve, the village of Bistritsa, then crossing Plana Mountain to flow into Iskar River in the Sofia suburb of Pancharevo.