trigradska river western rhodope mountains bulgaria

panorama scenery rhodope mountains bulgaria mountain destination mountainous travel rhodopes landscape bulgarian view southern summer day tourism buildings tourist europe european outdoor nature tour trip rodopi skyline sightseeing environment natural smolyan south province august 2020 nice location beautiful western southwestern municipality scenic wild ridge ridges range pasture skies white blue trigrad gorge canyon vertical marble rocks road woman enjoying cliff river defile cliffs drive picturesque empty dangerous rock overhanging trigradska trigrad mountains august clear green