The most beautiful caves in the world we've seen are just an hour outside of Ljubljana. The size of the Skocjan caves are unbelievable, and the variety and depth of the formations on display at Postojna are amazing.

The most beautiful caves in the world we've seen are just an hour outside of Ljubljana. The size of the Skocjan caves are unbelievable, and the variety and depth of the formations on display at Postojna are amazing.
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