prometheus cave natural monument, kutaisi, georgia

underground attraction blue caucasus cave cavern ceiling colorful curtain flowstone form formation geological geology georgia georgian hall hanging helictite illuminated illumination imereti inside karst kumistavi kutaisi landmark light limestone mineral monument natural nature old prometheus red rock sapaphlia sataplia speleology stalactite stalagmite stone system tourism tourist travel tskaltubo tsqaltubo wall curtains stalactites stalagmites formations