by s.konstantinović on Flickr.Vrelo Bune (Buna Spring) - is a strong karstic spring, emerging from h
by s.konstantinović on Flickr.Vrelo Bune (Buna Spring) - is a strong karstic spring, emerging from hugh karstic cavern beneath a high vertical cliff, southeast of Mostar in Bosnia-Herzegovina. The source of the Buna river is the finest example of an underground karst river and its one of the largest and most beautiful springs in Europe. -- source link
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