ice cave in rock crevice mountainous region

accumulation alpine alps altitude angle arctic background bedrock cave chapel cleft climate cold crevice ecology eiskapelle europe face field freeze frozen gateshaped geologic glacial glacially glacier granitic gray grey hole ice icesheet icefield icy landscape layer mountain mountainous mouth natural nature permanent remainder rock rocky scenery sheet snow stone thick tunnel vault wall wallpaper weight white winter season danger environment harsh firn geomorphological pattern