Lone Star Geyser in Yellowstone National Park

Sight · Yellowstone National Park

Lone Star Geyser

4.8-mile river walk to a geyser whose eruptions average three hours apart.

Photo: Wikimedia Commons
Type
Sight
Nearest trail
1.8 mi
Audio stories
3 nearby
  • Geyser
  • Trailhead
  • Parking
  • Restrooms
  • #48 of 101 sights

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Lone Star Geyser Trailhead

Overview

About Lone Star Geyser

Why stop

  • The Firehole River walk is rewarding even if you miss an eruption.

Heads up

  • Mobility-device access is uncertain on the patchy surface.

Map

Where it is

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SightLone Star Geyser44.41837, -110.80674
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Plan your stop

Before you go

Best time to go

Eruptions average about three hours apart and can send water and steam up to 45 feet, but that interval isn't an appointment. If you arrive just after an eruption, the wait can be long. The cone and river walk still make a worthwhile outing even if you miss the show.

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
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Lone Star Geyser Trailhead
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“You're nearing the Lone Star Geyser trailhead, where a mostly level riverside walk leads to a pale cone in a forest clearing. It's about five miles round trip, taking two to three hours before any wait for an eruption.”

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

More stories near here in the app

  • When Trees Grew on Old Faithful
  • Kepler Cascades
  • The Roots Behind the Red
  • Fern Cascades and Howard Eaton Trailhead
  • 243 audio storiesacross Yellowstone’s roads, triggered by GPS as you drive
  • Wildlife heatmapsfor Wolf, Grizzly Bear, Bison, and 13 more
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Guide

More about Lone Star Geyser

What you're walking toLone Star Geyser is a 12-foot silica cone in the trees southeast of Old Faithful. The 4.

Lone Star Geyser is a 12-foot silica cone in the trees southeast of Old Faithful. The 4.8-mile round trip follows the Firehole River on a former service road, so the walk is part of the visit. I'd make time for it if you're up for a longer outing and an eruption that may not line up with your schedule; if you only have time for a quick geyser stop, stay closer to Old Faithful.

The river routeThe trailhead is 3.

The trailhead is 3.5 miles southeast of the Old Faithful overpass, just beyond Kepler Cascades pullout. The mostly level route follows the river; allow about 2–3 hours round trip before adding any geyser wait. The bike section ends at a barrier about 300 feet from the cone, which remains visible from there. Bicycles can't continue to the geyser. The surface is paved only in intermittent patches; confirm its current condition with park staff if you need dependable wheelchair access.

How the cone growsHot water carries dissolved silica to the surface, where it builds the pale sinter cone a…

Hot water carries dissolved silica to the surface, where it builds the pale sinter cone a little at a time. The roughly three-hour interval has been observed since at least the 1880s, giving this geyser a remarkably long record of steady activity.

Get the cone and plume togetherWhen it erupts, frame the white plume with the pale cone in the same shot; the open mineral…

When it erupts, frame the white plume with the pale cone in the same shot; the open mineral ground and forest edge show its height and setting. You can see the geyser from the bike barrier about 300 feet away, too.

Wildlife

Wildlife in Yellowstone

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