postojna cave slovenia formations inside with stalactites and stalagmites |
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| navigate by keyword : ancient attraction beautiful cave cavern caves caving colorful dark deep espeloelogo europe formation geologic geologist geology grotte grotto inside interior jama karst landmark landscape light limestone low mineral mountain national natural nature postojna rock slovenia speleology stalactite stalactites stalagmite stalagmites stone tourism train travel tunnel underground wall water |
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| Postojna cave, Slovenia. Formations inside cave with stalactites and stalagmites. Amazing. |
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