Lone Star Geyser, Natural geyser in Yellowstone National Park, United States.
Lone Star Geyser is a cone geyser in Yellowstone National Park, Wyoming, built atop a natural mound of silica deposits that has formed over time. The cone stands about 12 feet (3.6 meters) tall and erupts roughly every 3 hours, sending water and steam into the air for about 30 minutes at a time.
The geyser was documented in the early years of Yellowstone, which became the first national park in the US in 1872. Its name reflects its remote position, set apart from the main geyser basins where most visitors gather.
Near the geyser, visitors will find a shared notebook where people record the time of each eruption for those arriving later. This small tradition has grown naturally among hikers passing through and gives the spot a communal feel.
The geyser is reached by a trail of about 5 miles (8 kilometers) round trip, starting from the Kepler Cascades parking area near the Old Faithful area. The path is mostly flat and easy to follow, but it can be muddy in spring or early summer.
Each eruption begins with a long pre-play phase of hissing steam and small splashes before the main water column rises, which can last longer than the main burst itself. Arriving early enough to watch this build-up adds a different layer to the experience that many visitors miss by timing their arrival for the peak only.
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