Let’s learn about Slovenia #5 – Postojna Cave
Postojna Cave ( Slovene: Postojnska jama ) is a 24,120 m long karst cave system near Postojna, southwestern Slovenia.
It is the second-longest cave system in the country (following the
Postojna Cave ( Slovene: Postojnska jama ) is a 24,120 m long karst cave system near Postojna, southwestern Slovenia.
It is the second-longest cave system in the country (following the