UNAC – WHERE WILD NATURE MEETS HISTORY

The Unac is one of the most beautiful rivers in western Bosnia and Herzegovina and a right tributary of the Una River. Renowned for its pristine nature, dramatic canyons and unique karst landscapes, it is formed by the confluence of the Mlinski and Šatorski streams, which originate beneath Mount Šator. After emerging from the Pojilo Gorge, the river takes the name Unac and continues its journey toward the northwest.

PHOTO: FB: DjCj foto

Stretching 65.5 kilometres, the Unac flows through four valleys and three spectacular gorges. Near the village of Prekaja, a dam created an artificial lake that once supplied water for the industrial needs of the town of Drvar.

A 350-Metre-Deep Canyon

The river reveals its most breathtaking scenery downstream from Drvar, where it cuts through a canyon reaching depths of up to 350 metres. The lower course of the Unac lies within Una National Park and is famous for an unusual karst phenomenon: in some sections the river disappears underground, only to re-emerge at Crno Vrelo (Black Spring), just a few kilometres before flowing into the Una at Martin Brod.

During periods of drought, parts of the riverbed can dry up completely, leaving behind warm, fish-filled pools – a rare natural phenomenon typical of karst regions.

A River That Shaped Local Life

For centuries, the village of Martin Brod has been closely connected to the Unac. Nearly every household once had a stream that powered one or even two traditional watermills, making the river an essential part of everyday life and the local economy.

The Unac Valley has been inhabited since prehistoric times. Numerous Illyrian hillforts testify to the importance of this area as the homeland of the Sardeatae tribe, while during the Roman era it was home to the municipium of Sardiaticum. Throughout the Middle Ages, the entire region was known simply as Unac, a name that remained in use until Drvar developed into an industrial centre.

Fishing and Outdoor Adventures

Today, the Unac is a favourite destination for nature lovers, photographers, anglers and outdoor enthusiasts. Its emerald-green waters, spectacular canyons and untouched landscapes make it one of the most beautiful – yet still largely undiscovered – natural gems of Bosnia and Herzegovina and the wider Balkan region.