From the bottom of a karst funnel it descends in a spiral and then takes the form of a narrow stream tunnel 140 m long, worked in Cretaceous limestone. The cave consists of narrow corridors and small chambers; its front part has two levels, and fragments of terraces occur. Chemical and mechanical deposits are weakly represented. Where the branches join, a small stream forms. During rains it fills completely with water. The cave is easy to pass through, though in places one must crawl.