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m01229: Opal Terrace, located across the road from the Mammoth Hot Springs Terraces, is a dried up hot spring
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m01229: Liberty Cap, a dormant hot spring cone in Mammoth Hot Springs area of Yellowstone National Park
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m01229: Colorful mineral water from a hot spring along Firehole Lake Drive in Yellowstone National Park
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m01229: Opal Terrace, located across the road from the Mammoth Hot Springs Terraces, is a dried up hot spring
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m01229: Reykjanes Peninsula, Iceland - July 11, 2023: Tourists walk towards the hot steam of Gunnuhver Hot Springs
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m01229: Close up of the Gunnuhver Hot Springs geothermal area, part of the Reykjanes UNESCO Global Geopark in Iceland
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m01229: Close up of the Gunnuhver Hot Springs geothermal area, part of the Reykjanes UNESCO Global Geopark in Iceland
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m01229: Danger Hot Spring sign at Gunnuhver Hot Spring Iceland
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m01229: Kopavogur, Iceland - July 11, 2023: Sky Lagoon spa, a geothermal heated pool. Entrance sign
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m01229: Kopavogur, Iceland - July 11, 2023: Sky Lagoon spa, a geothermal heated pool. Entrance sign
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m01229: Walkway to Radium Hot Springs
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m01229: To the hot springs!
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m01229: Radium Hot Springs
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m01229: Radium Hot Springs
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m01229: Blue Lagoon
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m01229: Blue Lagoon
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m01229: Blue Lagoon. Human Petri dish?
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m01229: This mud mask was really painful -- oh, is that "Thing" in the back?
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m01229: Blue Lagoon
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m01229: BLUE LAGOON
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m01229: Grjotagja Cave, a former bathing spot in northern Iceland
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m01229: Grjotagja Cave, a former bathing spot in northern Iceland
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m01229: Coke Zero at the Secret Lagoon
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m01229: Secret lagoon
BLMIdaho: Goldbug Hot Springs
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Los Paseos: Winter's Oasis
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YUICHI38: Riverside Footbath
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Los Paseos: Hot Waters, Chill Days
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YUICHI38: Japanese-style room at a hot spring inn
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YUICHI38: Snowy view from the open-air bath