It is best known for the Buna Spring (Vrelo Bune), one of the strongest springs in Europe and extremely cold water. The Buna flows west for approximately 9 km, starts at Blagaj and meandering through the villages of Blagaj, Kosor, Malo Polje, Hodbina and joins the Neretva at settlement Buna.
The Buna Spring (Vrelo Bune), one of Europe's most potent springs and notably cold, is well-known. The Buna flows westward for approximately 9 kilometers, originating at Blagaj and passing through villages including Blagaj, Kosor, Malo Polje, Hodbina before joining the Neretva near settlement Buna.