If you haven’t been there, go! It’s open every day of the year. Snow plowed from the North Entrance at Gardiner MT for you winter travelers.

Hot furry greats the cold river

Orange, red, green . . . bacteria, chlorophyll, sunlight

Excelsior Geyser in brilliant blue.
The largest geyser in the world, now dormant.

Bob crossing the boardwalk

Grand Prismatic Spring. . 370 feet in diameter and over 121 feet deep.

Boiling! This stuff ought to do just fine for a sci-fi thriller.

Cold water meets hot brine.
Runs hot and cold.