alternative energy
bacteria
carbonate
cascades
environment
extreme environments
geothermal
geothermal energy
ground water
horizontal
hot springs
hydrothermal
limestone
mammoth hot springs
microorganisms
mountains
nature
no people
orange
outdoors
steam
sustainable energy
thermal area
thermal spring
thermophiles
travertine
western usa
wyoming
yellowstone national park
定額
Geothermal flow of hot, carbonate rich water, forms cascading, dark orange travertine terraces, with steam rising and mountains in the background, at Mammoth Hot Springs in Yellowstone National Park, Wyoming.の素材 [FY31050771589]
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