West Thumb Geyser Basin Hydrothermal Feature AreaWest Thumb Geyser Basin Hydrothermal Feature AreaWest Thumb Geyser Basin FumerolWest Thumb Geyser Basin Hydrothermal Feature AreaWest Thumb Geyser Basin Hydrothermal Feature AreaWest Thumb Geyser Basin Hydrothermal Feature AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful Geyser AreaOld Faithful EruptsOld Faithful EruptsOld Faithful Erupts
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West Thumb Geyser Basin Hydrothermal Feature Area