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Keywords:Grand Island, Grand Island National Recreation Area, Great Lakes, Lake Superior, Michigan, Munising, National Lakeshore, PRNL, Pictured Rocks, adventure, backdrop, background, cave, cavern, ceiling, chunk, cliff, cold, curtains, dramatic scene, extreme, floor, freeze, frigid, frozen, ice, ice cave, ice curtain, icicle, natural, nature, north, outdoors, outside, reflection, rock, rugged, sandstone, scenery, season, snow, surface, texture, upper peninsula, water, winter
