Yellowstone Facts

Yellowstone grew a brand new thermal pool over the winter of 2024-25. Nobody saw it happen. Scientists returned to Norris Geyser Basin that April. They found a 13-foot-wide, ice-blue pool that had not been there before. The water was 109 degrees, about as hot as a bath. Sound sensors later traced its birth to tiny explosions in December, January, and February. It had been buried under snow the whole time.

By 1902, poachers had cut Yellowstone's wild bison down to about two dozen animals. They hid in Pelican Valley, the last free herd left in the country. Today the park counts nearly 5,300 bison. Most summer mornings in Hayden Valley, the herd walks straight down the centerline. Traffic stops in both directions. Rangers still give the same order: stay in the car, be patient, and never honk.

A firestorm roared into the Old Faithful area of Yellowstone in 1988. Crews climbed onto the roof of the giant log hotel beside the geyser to save it. The fire threw embers the size of fists, and cabins nearby burned. Roof sprinklers added a year earlier kept the shingles wet, and crews beat out the sparks that caught. The Old Faithful Inn they saved still stands.