Natural Attraction

Imperial Geyser

Natural AttractionOPERATIONAL★ 5
Imperial Geyser at Yellowstone National Park shows a vivid blue pool with yellow mineral rims and steaming vents.

Colorful microbial mats line the runoff around a pool of mineral-rich water; Imperial Geyser erupts from a 75-by-100-foot basin. The plume is driven by Yellowstone's active hydrothermal system, powered by heat from a deep magma chamber. Eruptions reach up to 80 feet in historic swings, with recent activity closer to 15 feet.

Access & viewing

GPS Coordinates
Not publicly listed
Accessibility
Moderate trail; uneven terrain; not wheelchair accessible

Conditions & safety

Permits Required
0

Planning advice

Nearby Attractions
Fairy Falls, Midway Geyser Basin, Grand Prismatic Spring, Fairy Creek Trail
Nearby Facilities
Fairy Falls Trailhead vault toilets; no potable water along the route
Best Time To Visit
The Fairy Falls extension is open from the Friday before Memorial Day through the end of September. Morning light enhances color; July and August are the busiest months—arrive early to beat crowds.
Tips Advice
  • Arrive before 7am to secure parking; the Fairy Falls lot fills quickly
  • Park at Fairy Falls Trailhead; expect limited space and overflow
  • Stay on the trail; no viewing deck at Imperial Geyser
  • Bring water, sun protection, and insect repellent; be prepared for variable weather
  • Bear spray is recommended and know how to use it
  • Footing is uneven; wear sturdy boots and watch for roots and mud
  • Cell service is spotty; carry a satellite device for emergencies
Insider Tips
  • Arrive before 7am to reduce crowds
  • Park at Fairy Falls Trailhead; parking is scarce
  • Bring water and bear spray
  • Check trail closures before you go

More details

Park Area
Lower Geyser Basin, Yellowstone National Park
Family Friendly Notes
Stay with children; thermal ground is unstable; hold hands; bear awareness
Recent Updates
5-star rating from 30 reviews.
Attraction Type
Thermal Feature
Elevation Feet
0
Distance From Entrance
6.4 miles round-trip from Fairy Falls Trailhead
Accessibility Level
Moderate hike; uneven terrain; not wheelchair accessible
How To Get There
From Grand Loop Road, park at the Fairy Falls Trailhead (very limited parking). Follow the Fairy Falls Trail to Imperial Geyser extension for a 6.4-mile round-trip hike.
Parking Availability
Very limited; lot often fills early and overflows onto highway verges
Road Type
Paved Grand Loop Road to trailhead; parking area is unpaved
Seasonal Access
Trail open late May through September
Entry Fees
Varies
Main Features
Fountain geyser; silica-lined conduits; colorful microbial mats along runoff; 75-by-100-foot pool
What Youll See
A plume erupting from a 75×100 ft pool; mineral-rich runoff supports vivid microbial mats along the channels; you view from the trail with no designated deck
Unique Characteristics
Historically active geyser in Lower Geyser Basin; notable for vibrant runoff mats and silica deposits; eruption history includes up to 80 ft heights
Safety Considerations
Thermal hazards: Stay on the maintained trail; ground around geothermal vents and hot springs can be thin and unstable. Do not step on crusts, touch water, or approach active vents or steaming areas. Keep a safe distance from any hot ground, steam plumes, or outflows. Wildlife: Bison, elk, deer, and bears frequent the area. Carry bear spray and know how to use it. Maintain 100 yards from bears and 25 yards from other wildlife; never approach or feed animals. Trail and conditions: The hike is generally easy and flat, but some sections can be marshy and footing may be slick when wet. Wear sturdy boots and stay on established paths to protect the ground and yourself. Preparedness: Weather in Yellowstone can change rapidly. Bring water, layers, and a map; plan your timing to avoid mid-day heat and crowds; remember that cell service is limited along the route.
Best Viewpoints
Along the Fairy Falls Trail corridor where runoff channels frame the geyser plume
Photo Opportunities
Golden-hour plume; close-ups of microbial mats; steam silhouetted against mineral crust
Photography Spots
Golden-hour plume; microbial mats along runoff; vantage points along the trail
Stargazing Quality
Good on clear nights with dark skies away from the trailhead
Sunrise Sunset Quality
Alpenglow at sunrise; shadows lengthen toward sunset
Visitor Center Present
0
Restrooms Available
1
Restroom Type
Vault toilets
Picnic Areas
0
Interpretive Signs
0
Cell Service
No dependable cell service at Imperial Geyser; plan ahead with offline maps and park signage for navigation.
Water Available
0
Guided Tours Available
0
Trailheads Here
Fairy Falls Trailhead
Connecting Trails
Fairy Falls Trail extension to Imperial Geyser
Nearby Services
Fairy Falls Trailhead facilities; no potable water along the route
Common Wildlife
Bison, elk, and deer frequently along the trail; bears present in the area
Best Wildlife Times
Meadows along the trail; early morning is best for wildlife viewing; maintain distance
Geological Formation Type
Fountain geyser in a hydrothermal system with silica-lined conduits
Scientific Interest
Visible hydrothermal plumbing: active geyser dynamics, silica deposition, and colorful microbial mats along runoff
Road Opening Dates
Late May; verify current park updates for openings
Snow Lingering
Snow patches can linger into late May; check conditions before you go
Winter Access
Backcountry winter access; not recommended for casual hikers
Best Visit Times
Early morning in late spring through early fall; avoid midday glare
Best Season
Late May–September; early morning visits reduce crowding and glare
Weather Patterns
Bug activity in late spring/early summer; potential afternoon thunderstorms; variable conditions in the basin
Peak Fill Times
Parking fills early in peak season; plan to arrive before dawn
Busiest Season
July and August
Fishing Nearby
0
Swimming Allowed
0
Boating Allowed
0
Climbing Areas
0
Review Summary
5-star rating from 30 reviews; visitors praise the backcountry setting, geyser dynamics, and vivid runoff textures, with cautions about parking and terrain

Location

Frequently asked questions

Do I really need to arrive before 7am to get parking?

Yes. The Fairy Falls lot is limited and fills early in peak season; arriving early minimizes parking risk and crowds.

Is it worth the 6.4-mile hike just to see Imperial Geyser?

Yes. The extended hike delivers a classic geyser scene, mineral runoff textures, and a sense of Yellowstone’s backcountry scale.

Can I bring my dog to the Imperial Geyser trail?

No. Dogs aren’t allowed on the Fairy Falls/Imperial Geyser trail or on most Yellowstone trails; keep them in developed areas and parking lots.

Will my 65-year-old mother be able to walk to the viewpoint?

It’s a moderate path with uneven terrain and roots; assess mobility and comfort with long distances; there’s no wheelchair access.

Is the water actually blue, or is that just in photos?

Water color varies with light and mineral content; you’ll see clear water with mineral staining and vivid mats along the runoff, not a guaranteed photographic blue.

Firehole River

Rhyolite canyon walls frame a geothermal-warmed Firehole River, with Firehole Falls dropping 40 feet.

Slough Creek

Meadow stream, VIP Pool at Lamar confluence; shaped by fluvial erosion and glacial deposition.

Inspiration Point

Promontory overlooking the Grand Canyon of the Yellowstone; rhyolite walls reveal millions of years of erosion.

Upper Falls View

Upper Falls, 109 ft drop over rhyolite—river erosion in a hydrothermally altered canyon.

Grand Prismatic Spring

Rainbow rim of a hot spring; colors arise from thermophiles in Yellowstone's volcanic system.

Sources

Last updated January 2026. Report an issue.