It is situated near Korna in the protected area of Kysuce. It was declared a Natural Site of Special Interest on 1984. It is a typical feature of flysch belt – oil production. In a protected area of 0.171 hectares, a natural outflow of light oil with a high oil content with occasional methane outflows can be seen. In the vicinity there were several boreholes drilled in 1898 and then until World War II. The assessment of bearings is currently inefficient.