Peričnik Falls, Natural waterfall in Kranjska Gora, Slovenia.

Peričnik Falls is a two-tiered waterfall on Peričnik Creek in the Vrata Valley. The lower drop plunges 52 m over a cliff of Pleistocene conglomerate, while the upper drop falls 16 m about 40 m above it. A recess behind the lower cascade lets visitors walk behind the water.

Peričnik Falls formed during the Pleistocene glaciations, when ice repeatedly filled and deepened the Vrata Valley. After the glaciers retreated, Peričnik Creek was left hanging above the valley floor and cut into a cliff of Pleistocene conglomerate, removing softer layers faster and splitting one fall into the present upper and lower drops. Erosional grooves from former flow paths remain visible in the cliff face.

The name Peričnik comes from the verb prati, originally 'to strike, beat', also used for water falling over a steep cliff and later for washing clothes. The local priest and mountaineer Jakob Aljaž cleared storm debris from the creek in 1895 and built the first footpath to the falls. The site is protected as natural heritage, after past ideas to use its water for electricity were abandoned.

A marked trail from Mojstrana leads to the waterfall, with the lower section accessible via a short walk from the Peričnik mountain hut. The path is straightforward, though sturdy footwear and caution on wet surfaces help ensure a safe visit.

The overhang behind the 52-metre Lower Peričnik Falls lets visitors walk behind the falling water. The local priest and mountaineer Jakob Aljaž cleared storm debris from the creek and built the first footpath here in 1895, and he measured the drop by lowering a weighted rope, getting roughly 50 m. A small third cascade just downstream is reported by the keeper of the Peričnik Lodge.