奇巌[kigan] strangely shaped rocks
巌窟[gankutsu] cave
巌壁[ganpeki] wall of rock
巌々とした[gangantoshita] craggy
巌頭[gantou] top of a massive rock

巉巌[zangan] near-vertical cliff or peak
巌蔭[iwakage] shade of a rock
危巌[kigan] steep, towering rock
枯木寒巌[kobokukangan] withered trees and frozen rocks