Bouinovsko Zhdrelo (Bouinovo Gorge) in the common of the village of Bouinovo, Smolyan district, in the Western Rhodopes. The water of the river Bouinovska has chiseled the 7 km long gorge in the company of cliffs as high as 350 m and a width of 5-6 m where the distance between the cliffs is shortest. The gaping holes of several caves of which Yagodinska is the most interesting tower the river at various heights. The cave is a three-level structure with galleries whose total length is 6500 m. It was a dwelling place in the Eneolithic, Bronze and Iron Age. The cave has been provided with lighting fixtures and safe passages. The Bouinovo Gorge is a listed sight with an adjacent area of 608.6 ha.
