The Dunajec River Gorge (Polish: Przełom Dunajca; Slovak: Prielom Dunajca; German: Dohnst-Schlucht) runs through the Pieniny Mountains in the south of Poland and the north of Slovakia (as Dunajec is the border river between the two countries in the area). The gorge is characterized by some of the most interesting geological and geomorphological structures and area-specific natural ecosystems with little anthropogenic influence. It is featured on UNESCO's Tentative List of World Heritage Sites in Poland. The Gorge makes 7 loops in its length. The surrounding rock reaches 300 m in height almost all the way through.