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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.
• Current Activity of Selected Geysers
• Hydrothermal Systems
• Yellowstone Volcano Observatory
• Hydrothermal Systems FAQs
• Old Faithful FAQs
• Hydrothermal Features
• Hydrothermal Features Videos: Watch videos that tell the story of microorganisms that thrive in hot water.
• Old Faithful Virtual Visitor Center: Explore exhibits, watch movies, learn about the park's hydrothermal treasures.
• Old Faithful Geyser Webcam: Watch streaming video of Old Faithful and other geysers.
• Life in Extreme Heat (Other Life Forms)
• More Geyser Media: Minute Out In It, Video Library, Sound Library