2018Myths and Flora - First Day Cover

Vjetrenica is the largest and most known cave in Bosnia and Herzegovina. It is in the south-eastern part of Bosnia and Herzegovina, on the very west end of the Popovo firleds, in Ravno municipality. Visitors are often in awe by the beauty of the underwater watercourses and waterfalls, chambers and passages. It is also unique by it forceful „wind“, or to be more exact, by the physical appearance of an air flow by which the constant interior and alterative exterior air temperature is equalised.