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Posted on Sep 01, 2025 / Travel

• Old Faithful was the first geyser in Yellowstone to get a name, back in 1870.
• Each eruption can release up to 8,000 gallons of hot water.
• The water temperature underground reaches about 200°C (around 400°F) before it erupts.
• Old Faithful isn’t the biggest geyser in the park, but it’s the most reliable one.
• The geyser has been erupting consistently for centuries, and it’s still going strong today.
• The Old Faithful Inn, built in 1904, is the largest log structure in the world and sits right next to the geyser.

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