Spačva forest is among the largest full-oak forests in Europe. With its 40,000 hectares is as big as the entire island of Krk! Forest Spacva one fifth of all oak forests in Croatia. The forest is riddled with rivers Bosut, Spacva, slides, and Lubnja Studva, and in it are unique and insular Bosnian whirlpools. Spačva forest passes highway Zagreb-Lipovac.