A major eruption of Castle Geyser can last over an hour. Here we offer the sounds of the steam phase, which occurs as an eruption is winding down.
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Geysers video, Yellowstone InDepth episode 7 (5 min. 49 sec.): With over half the world's geysers, Yellowstone offers tremendous opportunities to see these geologic wonders in action. Explore the mechanics of geysers, their role in the park's history and what they teach us about the world in which we live.