walkway tunnel postojna cave slovenia europe |
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| navigate by keyword : cave day destination jama karst lighted parapets path postojna route safety save sightseeing slovenia spectacular stalactite stalagmite system tourist travel trip trips underworld view hole tunnel passage tour tourism attraction europe attractive train railway tourists excursions nature natural scenery environment walk trails interior ground undergound speleology geology rocks rock european dark darkness adventure lights illuminated indoor hallway concrete floor caverns hall concerts event venue walkway landmark landscape passageway light humanize |
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| Picturesque Postojna Cave-cave system near Postojna, Slovenia. It is the longest cave system in the country and one of its top tourist sites. |
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