YellowstoneNPS:
Algae and Calcite Formations
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Morning Glory Pool
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Thermophiles
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Thermal runoff
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Grand Prismatic Spring
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Run off channel of Grand Prismatic Spring
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Grand Prismatic Spring
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Travertine terraces at Mammoth Hot Springs
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Filamentous bacteria at Mammoth Hot Springs
YellowstoneNPS:
Colorful thermophiles at Grand Prismatic Spring
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Thermophiles in Porcelain Basin
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Grand Geyser Runoff Channel
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View from the Grand Prismatic Overlook Trail
YellowstoneNPS:
"Do not mark bacterial mats" sign in the Upper Geyser Basin
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A rainbow of colors at the Norris Geyser Basin
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Hot spring & thermophiles, Upper Geyser Basin
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Cleopatra Spring, Mammoth Hot Springs
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Canary Spring, Mammoth Hot Springs
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Canary Spring, Mammoth Hot Springs
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Thermophiles from Doublet Pool
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Bison tracks in the bacterial mats at Silex Spring
YellowstoneNPS:
Thermophiles, Norris Geyser Basin
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Colorful bacterial mats at Ear Spring
YellowstoneNPS:
Morning sun brightens thermophiles along Iron Spring Creek
YellowstoneNPS:
Thermophiles in runoff from Sunset Lake at Black Sand Basin
YellowstoneNPS:
Firehole River as it passes by features in the Upper Geyser Basin
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Bacterial mat at Grand Prismatic
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Micro terraces of Palette Spring (2)
YellowstoneNPS:
Micro terraces of Palette Spring