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