The newest attraction at Yellowstone National Park is ice-blue, steaming hot, and about the size of a Jacuzzi. According to the U.S. Geological Survey, a new hot spring has appeared in Yellowstone.

Did you know that beginning in 1914 and continuing until 1951, Yellowstone visitors could actually swim in a warm, geyser-fed pool near Old Faithful? This remarkable attraction—often called the Geyser ...