Jasiołka Gorge – a nature reserve with the area of 123.41 hectares, lying between Ostra and Piotruś hills. It protects 272 species of vascular plants.
The area of the reserve covers a classic and very typical Low Beskid region of the gorge section of the Jasiołka River with a particularly picturesque landscape and varied morphology.
The reserve is rich in extensive landslide tongues and niches, rock falls and large debris fields. Diversity of terrain elevation is 230 m (390 - 620 m above sea level). The flora species include: Aposeris foetida, Aconitum degenii, henbane bell, Carex transsilvanica and others.