mountain creek, waterfall and entrance climb to the huge devil`s throat cave

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