2026-09-18 · nature
Old Faithful Geyser Observed in 1870
On September 18, 1870, Nathaniel P. Langford became the first person to observe the Old Faithful geyser in Yellowstone National Park, Wyoming. This remarkable geothermal feature was named for its predictable eruptions, which occur at regular intervals. Langford's discovery played a crucial role in highlighting the unique geothermal landscape of the region, ultimately contributing to the establishment of Yellowstone as the first national park in the United States.
Fun fact. Old Faithful erupts approximately every 90 minutes, shooting water up to 185 feet high.