The Slovenian Karst is where the word “karst” itself comes from, and beyond famous Postojna and Skocjan lie hundreds of caves: Krizna jama with its underground lakes crossed by boat and cave-bear bones on the floor, and Planina, where two underground rivers meet in the dark. This is the birthplace of the science of caves. PUBLIC guided tours (Krizna jama by small-group booking), Slovenia.
Slovenia
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