It is the most famous and best researched geological monument in northern Lithuania. The Cow's cave is an almost circular sinkhole. Speleologists believe that it is about 200 years old. Its diameter is 10-12 m, depth is about 12.6 m. The volume of the underground cavity with caves reaches 28 m3, the base area is 42 m2, the total length is 46 m. 5 caves extend from the underground frame.