Way more than half the geysers in the world are in Yellowstone National Park. There’s another big cluster in Iceland, and then a few in California.
But there are stragglers throughout the world, including this spectacular, nearly-man-made thing in Nevada: Fly Geyser.
Lots of photos of the geyser at Kuriositas, where I learned of the thing.
It’s on private land, on Fly Ranch (from which the geyser and a nearby reservoir get their names), but visible from a public road. You can find it about 20 miles north of Gerlach, on former State Route 34 (now County CR34) – in Washoe County in the northwest of the state. From Interstate 80, one would need to drive west from Winnemucca on Nevada State Road 49(?), or north from Wadsworth on state highway 447, to Gerlach.
Locals drilled a well at the site in 1916. For more than 40 years the well produced water with no problem. But in 1960, the well blew out. Hypothesis is that the well passed through heated rocks that contained water, and this heated, pressurized water blew out the well casing. The geyser has been erupting since 1960, building the impressive mineral mountain seen in the photo.