Karst Sinkhole "Cow's Cave"
Karajimiškis Landscape Reserve is situated around 3 kilometres west of Biržai. This area is unique because of the highest density of sinkholes (more than 200 items per sq. km). The reserve boosts the most famous and largest sinkhole in Lithuania, called Cow’s Cave (Karvės Ola). The story goes that once a cow was swallowed by the earth leaving only a stub of its chain at the rock. The Cow’s Cave is a funnel-shaped, almost round sinkhole. According to speleologists, it appeared around 200 years ago. It is 10-12 metres in diameter and around 12.6 metres deep. An opening is at the bottom of sinkhole. At the depth of 9 metres, there are five branches (Wet Cave, Narrow Hole, Bat Hole, and Toad’s Cave) and a lakelet 1.5 metre deep. The Cow’s Cave is still actively developing. Its parameters, the length of holes, the form of sinkhole, and other cavities are changing.
Karajimiškis landscape reserve is rich in many other famous sinkholes such as Geologists’ Hole (Geologų duobė), Fox’s Cave (Lapės duobė), Bird Cherry Hole (Ievos duobė), and Easter Hole (Velykų duobė).
Coordinates: 56.208892, 24.693543