Ключевые слова: algae, bacteria, blue, calcium, calcium carbonate, caldera, cloud, colorful, cone, feature, geological, geological formation calcium carbonate, geology, geyser, hot, hot springs, landscape, mammoth, mammoth hot springs, mound, national parks, nature, orange, orange spring mound sinter, rock, rock formation, snow, snowfall, snowy, snowy day, spring, steam, strange, thermal, thermal feature, thermophile, vivid, volcano, water wonders, yellowstone, yellowstone national park,