Piran Ljubljana Celje Kranj
Austria Hungary Croatia Italy
Mura Kupa Drava Sava
Skocjan Caves Krizna Jama Vilenica Postojna Caves
1980 1945 1990 1970
20 million 2 million 20 000 200 000
Caspian Sea Baltic Sea Black Sea Mediterranean Sea
Lakes Desert Vineyards Forests