Biržai Regional Park
|Biržai Regional Park|
Sinkhole formed in 2004
|Location||Panevėžys County, Lithuania|
|Area||14,659 hectares (36,220 acres)|
Biržai Regional Park covers 14,659 hectares (36,220 acres) in northern Lithuania near its border with Latvia. It was established in 1992 to preserve a distinctive karst landscape. About 20% of its area is covered by forest.
The park is notable for its sinkholes, created by the dissolution of the gypsum underlying its soil. About 9,000 sinkholes have been identified; the most notable is the Karves uola (Cow's Cave), which is about 20 meters deep. In 1998 the use of pesticides and fertilizers in the area was restricted.
- (in Lithuanian) Titulinis. Biržai district municipality.
- Directorate of Birzai regional park. Association of Lithuanian State Parks and Reserves.
- Central and Eastern European Sustainable Agriculture. Food and Agriculture Organization of the United Nations.
- Sinkholes and subsidence. Tony Waltham, Frederic Gladstone Bell, M. G. Culshaw, Springer, 2005, ISBN 3-540-20725-2.