Video PlayerClose
Visitors watch the eruption of the Old Faithfull Geyser in Yellowstone National Park, the United States, Sept. 5, 2019. (Xinhua/Han Fang)
Visitors watch the eruption of the Old Faithfull Geyser in Yellowstone National Park, the United States, Sept. 5, 2019. (Xinhua/Han Fang)