Kozara National Park was proclaimed a national park in 1967. It occupies the area of 33.75 km2. The peaks are not higher than 1000 m. The highest peak, named Lisina, is 978 m high. Other significant peaks are Mrakovica (804 m) in the central part of the park, Holá planina (876 m) , Rudine (750 m) Jarčevica (740 m) , Glavuša (793 m ) , Bešina polana (784 m) , Vrnovačka hlava (719 m) , Benkovac-Jurišina koca (705 m) , Šupljikovac (652 m) , Zečiji kámen (667 m) and Kozarački kámen (659 m) .
The park is full of thick woods and mountain meadows. Kozara National Park has a specific, mild continental climate with many sunny days. It is the result of its geographical location, shape of its relief, geological structure, height, vegetation and many other factors. The national park offers regenerative and recreational activities. Trips, hiking, cycling or collecting of curative herbs are just some of the many activities that you can do in this national park.
The park is, apart from its natural beauty, infamous for the crimes of the German and Croatian Nazis against local inhabitants during the World War II. During that period, fierce fighting took place in the area. This tragic historical era of one of the most beautiful European sites is a memento for today and future generations.