Ключевые слова: 5000, 5000 masl, adventure, altitude sickness, aztec, blue, don goyo, elevation, glacier, high, highlands, highmountain, hike, hiking, ice, iced, iztaccihuatl, landscape, latin america, mexico, mexico state, morning, mountain, mountaineer, mountains, national park, nature, outdoor, popocatepetl, sleeping woman, snow, snowy, tour, tourism, tourist, trail, travel, volcanic, volcanic activity, volcano, volcanology,