Ключевые слова: acid, active, adventure, boiling, chemicals, colorful, crater, danger, earth, emission, eruption, explosion, extreme, formation, geyser, hazard, hiking, holiday, hot, iceland, icelandic, island, isolation, journey, landscape, lava, martian landscape, mountain, myvatn, nature, orange, outdoor, polar, red planet, remote, sightseeing, smell, smoke, soil, stink, sulfide, sulfur, thermal, travel, trekking, vacation, vapor, volcanic, zone,