Porkchop Geyser in Yellowstone National Park

Sight · Yellowstone National Park

Porkchop Geyser

A quiet pool with a very loud history.

Photo: Wikimedia Commons
Type
Sight
Nearest trail
0.4 mi
Audio stories
7 nearby
  • Exhibit

Hear the audio tour

Norris Geyser Basin

Overview

About Porkchop Geyser

Why stop

  • A rare chance to see the crater left by a 1989 hydrothermal explosion.

Heads up

  • The present pool is visually subtle beside the rubble; it’s not a geyser show.

Map

Where it is

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SightPorkchop Geyser44.72223, -110.70771
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Plan your stop

Before you go

5 active Yellowstone alerts

  • ClosureBiscuit Basin closed after hydrothermal explosionBiscuit Basin’s parking lot, boardwalk, and Firehole River are closed to all travel.Official details
  • ClosureMost Yellowstone roads close to regular vehicles November 1Most Yellowstone roads and the West, South, and East entrances are scheduled to close to regular vehicles November 1, 2026, as the park prepares for winter operations.Official details
See all 5 alerts
A park ranger sits on a dash-mounted phone, talking, as Parkwolf’s Tour Guide plays “Army Cutworm Moths: A Grizzly Bear Buffet” on Grand Loop Road below Dunraven Pass in Yellowstone
Parkwolf Tour GuideThe highest, rockiest slopes around here are a summer buffet for grizzly bears.

Yellowstone Tour Guide

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Parkwolf is a GPS audio tour guide for Yellowstone National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.

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Recorded for this place

Norris Geyser Basin
0:00 / 0:32
“You're coming up on the entrance to Norris Geyser Basin, where I'd allow about an hour to explore on foot. For a shorter visit, choose Porcelain Basin, an open sweep of pale ground, blue pools and hissing vents.”

Plays as you drive up to Porkchop Geyser in the Parkwolf Yellowstone Tour Guide.

More stories near here in the app

  • Norris Can Change Several Pools at Once
  • Peg Lindsley Made Her Own Uniform
  • Museum of the National Park Ranger
  • A Pine Pushes Back
  • 243 audio storiesacross Yellowstone’s roads, triggered by GPS as you drive
  • Wildlife heatmapsfor Wolf, Grizzly Bear, Bison, and 13 more
  • Works offlinemaps, 167 trails, 192 places, and audio download before you lose signal
  • CarPlay readysimple controls built for the drive
★★★★★
“First time driving through a national park. We used the Yellowstone tour on grand loop Road and it’s just like having a tour guide in your car with you.”
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4.7 from 8,600+ ratings

Guide

More about Porkchop Geyser

What you’ll findPorkchop Geyser is a small, gently roiling hot spring beside the boardwalk at Norris Geyser…

Porkchop Geyser is a small, gently roiling hot spring beside the boardwalk at Norris Geyser Basin. It’s not a predictable eruption stop anymore; I’d pause for the fractured rim and the story behind it. The pool can look quiet beside all that rock, so expect geology more than a show.

Before the explosionThe spring was once a roughly 3-meter pool with a porkchop-shaped opening and small, irregular…

The spring was once a roughly 3-meter pool with a porkchop-shaped opening and small, irregular eruptions. In 1985 it became a continuous spouter, sending water 6 to 9 meters into the air for more than four years. Its roar carried about 2 kilometers, and winter spray built ice cones over 7 meters tall.

The 1989 changeOn September 5, 1989, the geyser suddenly exploded.

On September 5, 1989, the geyser suddenly exploded. Blocks over a meter across were uprooted; smaller pieces traveled over 60 meters. The blast left a crater over 10 meters wide; the old pool shape was gone. Scientists think a narrow vent that had been throttling the eruptions failed, letting pressure drop quickly. The hot spring now roils gently in the crater. Stay on boardwalks and designated trails: hydrothermal water can cause severe burns.

Wildlife

Wildlife in Yellowstone

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Sighting maps show where each species has been reported across Yellowstone. Wildlife moves, so no sighting is guaranteed.

Keep exploring

Near Porkchop Geyser

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Parkwolf’s Yellowstone ranking

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