entrance climb into the huge devil`s throat cave in the rhodope mountains

abrupt abundantly background beautiful bridge bulgaria cave cliff climb deciduous devils eastern entrance environment europe evergreen foliage forest gorge green hiking hills huge into journey landmark landscape large mountain mountains nature outdoor overgrown perilous precipitous rhodop rhodope rhodopes risky river rock scenery scenic shadetree steep stone summer thrilling throat tour tourism travel trees trigradskoto valley with wood zhdrelo