The Una River is unlike any other river in the Balkans. Its water isn't just clear — it's a vivid, almost improbable turquoise that photographers struggle to capture faithfully. It comes from limestone springs and stays that colour for most of its length, deepening to emerald in the pools below the falls.
The river flows through northwest Bosnia in a series of waterfalls, rapids, and wide pools, passing through the Una National Park — established in 2008 to protect one of the least-disturbed river systems in Europe. The entire Una River valley is nominated for UNESCO status.
What makes the Una special as a rafting river is that it combines genuine whitewater (up to Class IV in the upper section) with some of the most spectacular scenery you'll paddle through anywhere. The cascades at Martin Brod are enormous — rafts pass directly through the spray zone of multi-tiered falls. Then the river widens into vast turquoise pools where you can swim in water warm enough to be comfortable from May onwards.
The most dramatic section — a series of large falls on both the Una and the Unac tributary. Rafts pass through the spray at the base. One of the most photogenic river moments in Europe.
The river's colour is genuinely extraordinary — a mineral-rich turquoise that's warmer than you'd expect. Long pool sections are natural swimming spots between the rapids.
The riverside town of Bihać has a medieval fortress and an Ottoman tower right on the water. Worth a few hours after your rafting day.
Otters, brown bears, lynx, and over 150 bird species in the park. The forests along the Una are some of the most biodiverse in the western Balkans.
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