billion of years...
Postojna Cave
(Slovene: Postojnska jama; German: Adelsberger Grotte; Italian: Grotte di Postumia) is a 20,5 km long Karst cave system near Postojna, Slovenia. It is the longest cave system in the country as well as one of its top tourism sites
Wikipedia
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Uploaded on May 19, 2009
Taken on May 19, 2009
billion of years...
Postojna Cave
(Slovene: Postojnska jama; German: Adelsberger Grotte; Italian: Grotte di Postumia) is a 20,5 km long Karst cave system near Postojna, Slovenia. It is the longest cave system in the country as well as one of its top tourism sites
Wikipedia
1,550
views
15
faves
108
comments
Uploaded on May 19, 2009
Taken on May 19, 2009