Czarnostawianska Siklawa is one of the highest waterfalls in Poland with a total height of 140 meter. Czarnostawianska Siklawa is located south of Lysa Polana, near lake Morskie Oko.
There is a trail starting at the hostel Morskie Oko, along the lake to Czarnostawianska Siklawa. The waterfall can be reached in 40-50 minutes.
Czarnostawianska Siklawa is a series of small cascades falling from lake Czarny Staw pod Rysami into the bigger lake of Morskie Oko.
There are several other waterfalls in the area. I think Wielka Siklawa is one of the more known waterfalls in Poland.