Steam and Horns: Watching Bison Rule the Firehole at Midway Geyser Basin

The morning light in Yellowstone cuts cool and thin at 7,300 feet. Steam rises in slow, ghostly curtains from the shallow bowls of Midway Geyser Basin; the ground hisses faintly as if the earth were breathing. Off the boardwalk, the Firehole River snakes in a dark ribbon, its current catching the sky. Near a bend, a herd of bison moves in deliberate, ancient cadence—heads low, tails swishing—following the river like a highway that knows the safest lines. They are both enormous and intimate: massive shoulders and shaggy manes that steam in the cold air, and the soft, surprising grunt of a calf seeking its mother. For a few minutes you stand very still and discover how close you can come to two kinds of raw power at once—geothermal and wild—without losing your breath.