blue Castrozza Cimon de la Pala Dolomiti horizon ice landscape mountains Pale S.Martino Passo Rolle rocks sky snow white clear fresh mount mountain national nature park rainer river Seattle usa Washington water austere bare bleak canada cliff cold dangerous difficult environment extreme face forbidding freezing frozen glacier harsh high icy mountainside natural rock Rockies Rocky Mountains severe silt stern adventure alps clouds freeze giant huge sharp ski skiing sunlight weather storm wind chill shadow snowy steep beams climbing great hiking light Morning outdoor outdoors peaceful peak rays ridge skyline sports sun sunrise travel valley winter background coast Midnight Sun Mt Erebus ocean Ross Sea sea seascape South Pole summer volcano american chunk crack fissure gulley height lump Mount Baker terrain texture top view boulder crevasse antarctica coastline lava memorial monument person polar sailor seal