Belogradchik rocks
Apr, 2019Views
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![Cave PROCHODNA or "EYES OF GOD"
This is the longest cave tunnel in Bulgaria, with a length of 365 meters and a height of the entrances 56 meters. [2] As a result of the erosion caused by the permeating waters, the phenomenon "Okna" or](https://cdnpt01.viewbug.com/media/mediafiles/2019/03/12/83777807_widepreview400.webp)
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