ancient cave `houses` in medieval city-fortress chufut-kale, bakhchisaray, crimea. these kind of `buildings` were used for liv

adventure ancient artificial attraction bahchisarai bakhchisarai bakhchisaray bakhchysarai catacomb cave cavern cavity chufut chufutkale city crimea crimean culture fortress ground hole house kale krim krym landscape medieval mount mountain mysterious nature old remains rock room ruins russia settlement stone tourism town travel tunnel under underground village walk