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Old Faithful and hundreds of other geysers, such as Beehive, Castle, Riverside, and Grand, not to mention numerous hot springs! All these hydrothermal features attract millions of visitors every year. The Firehole River runs through this area, so it is a logical place to examine the stream’s water quality.

Very good—and Midway Geyser Basin should be Sample Site 3. Midway is approximately halfway between Kepler Cascades and the junction of the Firehole and Gibbon Rivers, so it’s a convenient reference point for us.

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Cast of characters - Maya Crowbes, Dr. A Beadle, Gray Fischer, Viola DeRama
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Q: Name three geysers in the Upper Geyser Basin.

GLOSSARY: hydrothermal—having to do with hot water