
Steam threads the air above Porkchop Geyser as boardwalks loop around a vent and a crater rim. Mineral crust glints in pale light while heat radiates from the surface. This activity arises from a tectonic/volcanic hydrothermal system at Yellowstone's hotspot, where faulting funnels superheated water to the surface. Rocks up to 1.88 meters were hurled as far as 60 meters during the 1989 explosion.
Summer (June–August) is optimal; roads are open and light is favorable. Mornings offer softer light for photography; avoid mid-day crowds.
- Stay on the boardwalk; ground around hot springs and vents is thin and scalding. Don’t step off marked paths. - Wear sturdy shoes to handle uneven boardwalk sections. - Carry bear spray and stay alert for wildlife in Norris Basin. - Cell service is limited here—download maps or note your route before you go. - Thermal water can reach near-boiling temperatures; do not touch vent openings or any discolored areas.
Norris Geyser Basin; Norris Museum and Visitor Center
Boardwalk with gentle slopes; some sections uneven
Keep children on boardwalk; heat and steam hazards require close supervision
Norris Geyser Basin Museum and Visitor Center; restrooms; potable water
Based on 9 Google reviews
Corey Twardoski
Watch out! Porkchop has a violent history of attacking tourist... Like much of the wildlife in Yellowstone, it's advisable to keep at least a bus length between you and this little monster. But seriously, this "geyser" is more like an explosion pool. The water is about a turquoise blue as it comes in this spring, so one would think that Porkchop might have more in store.
Anita Brighton
I wish there was an elevated viewing post to observe Porkchop Geyser from above as its elevated from the ground quite a bit.Great place to spend half a day exploring. Be aware, the only toilets are above the trail in the parking area so you may want to plan a figure 8 loop or risk backtracking. There is so much to see! Tons of variety and interesting features. Great walk that is most easy with a few moderate uphill grades that required some breaks for cathing breath for sedentary middle agers like me.
Cameron Flewellen
Very neat story about this geyser upending a bunch of rocks during one of its last big eruptions.
Showing 3 of 9 reviews
Parking fills quickly in peak season; arrive early or expect overflow; Norris Basin can be busy by mid-morning.
Yes. The loop provides a direct view of a dynamic hydrothermal system with a documented explosion history, all within easy access from Norris.
Eruptions are variable; you may see steam plumes and surface activity, but guaranteed eruptions are not guaranteed—conditions shift with water chemistry and pressure.
Boardwalks are generally accessible, with mostly level paths; some sections may have gentle inclines. Plan for short rests and steady pacing.
Color comes from mineral content and lighting; the plume and water can appear blue-green under certain conditions. Real appearance varies with light and season.
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