alternative energy
bacteria
carbonate
colorful
drought
dry
environment
extreme environments
geothermal
geothermal energy
ground water
horizontal
hot springs
hydrothermal
limestone
mammoth hot springs
microorganisms
mountains
nature
no people
orange
outdoors
rocky mountains
sustainable energy
terraces
thermal area
thermal spring
thermophiles
travertine
western usa
white
wyoming
yellowstone national park
定額
Dry terraces of travertine rock in a mountainous landscape of Mammoth Hot Springs in a drought, Yellowstone National Park, Wyoming.の素材 [FY31050771585]
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