It is located in hinterland of the city of Rijeka and Kvarner Gulf, in the north-western part of Gorski Kotar. 

The basic phenomenon of the Park are forests and hydrogeological nature monument – the Kupa river spring. There are more than a dozen of different forest communities and around thirty other types of plant communities. The Park is characterised by different karts phenomena and forms so the rich vegetation hides many potholes, sinkholes and grykes. The wealth of vegetation and extensive geomorphological diversity provide shelter to a large number of animal species, especially birds. It is also a habitat of three large carnivores: lynx (Croatian: Ris) by which Risnjak was named, wolf and brown bear.