Ключевые слова: canyon, climate, collection, communications, device, expedition, explorer, firn, geography, geological, glacial, glacier, glaciology, gorge, ice, instrument, landscape, mail, man, mark, mass, measurement, measuring, mountain, nature, peak, philately, post, postage stamp, postmark, ravine, region, research, researcher, ridge, rock, russia, science, scientific, snow, soviet, stamp, survey, theodolite, top, travel, ussr, valley, weatherprooflacket, white,