There are only 20 caves in the world that have over 20 underground species. By biodiversity of its underground fauna, Vjetrenica is the first in the world. It accounts for 92 described species adapted only to undersoil life not able to survive under different circumstances. there are also 6 more species in the process of scientific description.
This area is characterized by many endemic and relic species. Overexploitation of natural resources such as forests, over pasture, landmines and planned hydroelectric power plants threaten this unique site. The special value of this area is Štrbački buk – the unique waterfall and cascades made by joint efforts of biological, chemical and physical influences.
The suggested national park Igman-Bjelasnica-Treskavica-Visocica is placed in central Bosnia, within the Federation of BiH, latitude 43°30’05” – 43°50’03” and longitude 7°58’12” – 18°24’33”. It belongs to Sarajevski and Hercegovacko-Neretvljanski canton. The main entrance to the site is located 15 km to the southwest from Sarajevo.
The mountain of Trebević (1629m) is located just above Sarajevo, which qualify the capital of Bosnia and Herzegovina among rare cities in the world. Only an hour and a half divides the city center from the top of the mountain, with a majestic view on many beautiful mountains and valleys spreading all around.