Drežnica Valley, Protected valley in Herzegovina-Neretva Canton, Bosnia and Herzegovina

Drežnica Valley stretches between two mountains and forms an elongated valley with steep stone walls on either side. The Drežanka River flows through the bottom and creates several natural swimming spots at shallower sections.

The valley's cultural landscape, including a medieval inscription carved into the rock by duke Mastan Bubanjić, is listed as a National Monument of Bosnia and Herzegovina by KONS. The inscription, roughly dated to the 14th century, sits in the Kuk Cyclamen sector, a site now used as a climbing area.

The valley's name comes from the Drežanka stream, and its slopes hold the medieval rock inscription of duke Mastan Bubanjić, carved in the 14th century in the Kuk Cyclamen climbing sector. The whole landscape, inscription included, is on the List of National Monuments of Bosnia and Herzegovina. The stream springs at Mošćenica below Čvrsnica and forms three waterfalls 10 to 12 m high near its source.

The Drežanka spring lies about eight kilometres from the nearest settlement and is reached by a roughly two-hour hiking trail. Near the spring are three waterfalls 10 to 12 metres high. The canyon has over 100 climbing routes across ten sectors of different orientations, so some sectors suit morning and others afternoon climbing.

A waterfall cascades down the cliffs only a few times each year, after snow and heavy rain feed the mountains above. Spotting it requires visiting at exactly the right moment.