Primeval forest reserve Krakovo is located near Konstanjevica na Krki village in the eastern part of Slovenia, near Croatian border. The reserve has an area of 40.5ha. The forest canopy is thin and consists mainly of English oaks (Quercus robur), which are the largest trees in the forest. Below is the middle layer, which consists mainly of shade tolerant common hornbeam (Carpinus betulus), field maple (Acer campestre), fluttering elm (Ulmus leavis) and native alder (Alnus glutinosa).
Dead tree trunks of large English oaks (Quercus robur) are characteristic for the forest.
Part of the reserve is flooded regularly by the high waters of river Krka. There are numerous ponds below the mighty English oaks canopies.
After the trees in old-growth stage die they are quickly replaced by youngsters.