The waterfall is part of a series of cascading rapids and falls formed by the deposition of tufa, a porous limestone created by calcium carbonate precipitation.
Štrbački buk is the tallest and most significant waterfall in the entire Una National Park system.
The river water at this location is noted for its high clarity and distinctive emerald-green hue caused by mineral content.
The wooden walkways were constructed to allow viewing access without damaging the fragile, living tufa moss ecosystem.
It is a central waypoint for the annual Una Regatta, an international rafting and kayaking event.
Štrbački buk is a 25-meter-high terraced waterfall located on the Una River within the Una National Park in Bosnia and Herzegovina. The waterfall serves as a natural border between Bosnia and Herzegovina and Croatia. It is characterized by its tufa barriers and powerful water flow that creates a wide, multi-leveled cascade. The area is integrated into the Una National Park, established in 2008 to protect the surrounding flora and the upper course of the Una River. Visitors access the waterfall via a series of wooden walkways and platforms built directly over the river. The surrounding vegetation is dense and temperate, supported by the river's high humidity. The site is a focal point for regional kayaking and rafting expeditions due to the river's rapids. Geological formations here are composed primarily of limestone, which contributes to the characteristic travertine structure of the falls.
The highest wooden observation deck providing a direct, head-on view of the primary cascade.
Wear sturdy, non-slip footwear as the wooden walkways and stone surfaces can become slippery from mist.
Bring a waterproof cover for cameras or smartphones to protect equipment from the heavy spray.
Visit on a weekday during the shoulder season to avoid peak crowding on the narrow viewing platforms.
Attempting to swim or enter the water directly at the base of the main drop due to dangerous currents.
The park remains open year-round, but road access can be restricted by heavy snow in winter; verify local conditions before visiting during the cold season.
Stay strictly on designated wooden walkways to prevent damage to the tufa formations and surrounding vegetation.
