I'm probably going to hitchhike from Niš, Serbia to Kopaonik National Park.
I've done some searching and it seems I can camp there and that there are no fees, but I cannot find any specific points within the park where the camping facilities are located.
Since the park is big and I'll be hitchhiking it could be quite important to know which spots on the map to aim for so I don't get stuck in the wrong part far from any campsite.