Postojna Cave, situated one hour’s drive southwest of Ljubljana, Slovenia’s capital, is so vast, it has its own railway.https://www.cnn.com/travel/article/olms-baby-dragons-slovenia-postojna-cave-cmd/index.html
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Postojna Cave, situated one hour’s drive southwest of Ljubljana, Slovenia’s capital, is so vast, it has its own railway.https://www.cnn.com/travel/article/olms-baby-dragons-slovenia-postojna-cave-cmd/index.html