Croatia
Zarečki Krov, Istria, Croatia. Zarečki Roof is a large cave that resembles a roof over the river Pazinčica. Its flow creates a ten-meter-high waterfall and lake nearly ten feet deep. It is located 3 km from Pazin to Cerovlje in Croatia. #croatia
Source : http://www.zoran-jelaca.com/en/slideshow/2/287
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