Kacza Siklawa is one of the High Tatras' best-kept secrets — a wild, impressive waterfall that most tourists never get to see. Tucked away in the Kačacia Valley, it rewards those willing to venture off the beaten path.

The waterfall is fed by the Kačací stream, which flows down from the Zelené pleso Kačacie (Green Duck Lake). According to mountaineer Władysław Cywiński, the total drop reaches an impressive 65 metres, consisting of a main vertical fall of 30 m followed by five smaller cascades. The surrounding landscape is quintessentially Tatra: rocky walls, dwarf pine, and rushing meltwater in spring. Summer brings a refreshing coolness near the falls, while autumn colours the valley in warm golds and reds.

• Łysa Polana (Lysá Poľana) — blue hiking trail towards Rohatka (Prielom), the waterfall is located close to the route — difficulty: moderate

• No official hiking trail leads directly to the waterfall — reaching it requires leaving the marked path and hiking on unmarked terrain
• The waterfall is located in Slovakia, in the Bielovodská Valley area

Interestingly, the Slovak name 'Hviezdoslavov vodopád' honours the celebrated Slovak poet Pavel Országh Hviezdoslav. And for years, the waterfall's height was drastically underestimated — early records put it at just 15 metres!