Postojna Cave, situated one hour’s drive southwest of Ljubljana, Slovenia’s capital, is so vast, it has its own railway.Postojna Cave, situated one hour’s drive southwest of Ljubljana, Slovenia’s capital, is so vast, it has its own railway.
Postojna Cave, situated one hour’s drive southwest of Ljubljana, Slovenia’s capital, is so vast, it has its own railway.Postojna Cave, situated one hour’s drive southwest of Ljubljana, Slovenia’s capital, is so vast, it has its own railway.
