Semi-Centennial Geyser — photo spot in Yellowstone National Park, Grand Loop Rd, Mammoth, WY 82190, USA
Semi-Centennial Geyser
Semi-Centennial Geyser is an intermittent, dramatic geothermal fountain near Mammoth along the Grand Loop. Photograph sudden eruptions of boiling water and steam contrasted with surrounding thermal features and boardwalks. Best light is early morning or late afternoon to avoid flat midday highlights and backlit steam; cold mornings enhance steam visibility. Accessible from roadside pullouts and short boardwalks—stay on designated paths. No extra permits beyond park entry; parking is limited so a
Semi-Centennial Geyser
Semi-Centennial Geyser is an intermittent, dramatic geothermal fountain near Mammoth along the Grand Loop. Photograph sudden eruptions of boiling water and steam contrasted with surrounding thermal features and boardwalks. Best light is early morning or late afternoon to avoid flat midday highlights and backlit steam; cold mornings enhance steam visibility. Accessible from roadside pullouts and short boardwalks—stay on designated paths. No extra permits beyond park entry; parking is limited so a