56°18′N 24°55′E / 56.300°N 24.917°E
The Biržai Forest is a primaeval forest in Biržai District Municipality, Lithuania. With the area of 16,770 hectares, it is the tenth largest forest in terms of area in Lithuania. It is managed, with some other smaller forests, by the Biržai Forestry Authority (Biržų miškų urėdija). [1]