Black Growler

Overview

Black Growler is a classic Yellowstone fumarole: a vent that blasts superheated steam and gas rather than water. Temperatures measured here have ranged roughly 199–280°F, and you’ll often hear it before you see it thanks to the constant roar. It sits on the Porcelain Basin side of Norris Geyser Basin, reached via sturdy boardwalks.

What You’ll See

Expect vigorous, noisy steam with a sulfur tang. On cool mornings or chilly days, the plume looks especially dramatic. Like much of Norris, Black Growler’s behavior and even exact location have shifted over time—this basin is famously dynamic—so what you see can vary from year to year.

A Bit of History

In the late 1800s it was called Black Geyser before the name Black Growler stuck, a nod to both its sound and the dark deposits around its vent. Early accounts describe a chimney‑like opening with little water and a strong sulfur odor.

How to Visit

Follow the Porcelain Basin loop boardwalks from the Norris Geyser Basin parking area. There are no facilities at the feature; restrooms are back at the lot. The longer basin loops can feel like a real walk with some grades, but the payoff is a greatest‑hits sampler of geysers, fumaroles, hot springs, and mud pots in one place.

Pair It With

You’re steps from other Norris standouts, including Steamboat and Echinus, plus numerous colorful springs and smaller geysers. It’s easy to see several marquee features in a single stop.

Safety Notes

Stay on the boardwalks—ground here is thin and the water and steam are extremely hot. Avoid lingering in the steam plume (it can be acidic and hard on eyes, lungs, and camera gear). Keep kids close; pets aren’t allowed on the boardwalks. Wildlife can appear anywhere—give animals ample space.

Best Time to Visit

Early or cool parts of the day make the steam most photogenic and usually mean lighter foot traffic on the boardwalks. Check the wind and position yourself upwind for clearer views and more comfortable viewing and photos.