The Times of India

In the 1870s, explorers in Yellowstone National Park witnessed a geyser that erupted like clockwork and gave it a name that still defines Yellowstone today

Yellowstone's Old Faithful geyser is a rare geological feature. Explorers named it in 1870 for its remarkably regular eruptions. Underground heat, water, and a special plumbing system create these spectacles. Earthquakes and rainfall have slightly altered its eruption intervals over time. Its reliability makes Old Faithful Yellowstone's most famous natural symbol.