Thermal Spring Erupts at Yellowstone, Not Linked to Supervolcano

Scroll down for video of Ear Spring eruption

Tourists view the Morning Glory hot spring in the Upper Geyser Basin of Yellowstone National Park in Wyoming, on May 14, 2016. Mark Ralston/AFP/Getty Images

A Yellowstone National Park thermal spring near the famed Old Faithful geyser erupted for the fourth time in 60 years.

Ear Spring, which is shaped like a human ear, began shooing steam 20 to 30 feet up in the air, U.S. officials said. A height of that size has not been recorded since 1957.