Czarny Staw pod Rysami, or Black Lake below Mount Rysy in English, is a mountain lake in the Tatra Mountains, Southern Poland. It is located on the Polish side of the highest mountain in Poland; Mount Rysy. At 1,583 m above sea level, it overlooks the nearby lake of Morskie Oko. With a maximum depth of 76 m (249 ft), it's the second deepest Tatra lake after Wielki Staw Polski, and the fourth deepest lake in Poland. A walking path goes around the lake, and leads up to Mount Rysy, or down to Morskie Oko.