Liberty Cap

37 ft travertine cone at Mammoth Hot Springs, formed by a long-running hot spring.

Insider tip

Capture early light when steam rises off the cone.

Insider tip

Look for the layered mineral growth on the cone itself.

The light

Golden hour enhances the travertine's pale tones; alpenglow possible on clear mornings

Heads up

Thermal burns risk; stay on boardwalks; boardwalks wet and slippery; fragile thermal crusts can crumble; wildlife at a distance; follow park safety rules; trac…

Natural Attraction

Natural AttractionOPERATIONAL★ 4.7
Geological Formation0 ftRestrooms availableNo permit neededGolden-hour pick

A white travertine cone rises 37 feet above the Lower Terraces, its mineral crust catching light as water once pushed calcium carbonate into a towering mound. This growth marks about 2,500 years of deposition from a spring that stayed active in one spot, building the cone over centuries. It stands as a tangible record of Yellowstone's shifting geothermal system.

Getting there & parking

How To Get There
From Yellowstone's main roads, drive to Mammoth Hot Springs; park near Liberty Cap, then follow the boardwalk toward Palette Spring. Liberty Cap is visible along the Lower Terraces boardwalk.
Distance From Entrance
Drive-up access; boardwalk distance ~135 yards (123 m) from Liberty Cap parking to Palette Spring; entire Lower Terraces loop ~1 hour.
Road Type
Paved
Parking Availability
Parking near Liberty Cap; can be crowded in the afternoon.
Peak Fill Times
Afternoons in peak season; parking areas fill by afternoon

When to go

Best Time To Visit
Spring melt in May and fall sunrise offer the best light for Liberty Cap; midday glare and crowds peak in summer.
Best Visit Times
May (snowmelt) and fall (sunrise) for light and fewer crowds
Sunrise Sunset Quality
Golden hour enhances the travertine's pale tones; alpenglow possible on clear mornings
Best Season
Spring and Fall
Busiest Season
Afternoons during summer
Seasonal Access
Seasonal access: Drive-up viewing is available most of the year, but winter snow and ice can limit access; May snowmelt improves visibility and approach conditions; fall mornings provide sunrise light; afternoons tend to be crowded.
Winter Access
Winter access exists with conditions; traction required; some sections may be closed during severe weather
Weather Patterns
Variable; spring melt and summer warmth with possible afternoon showers
Fall Colors Peak
Late September to early October

What you will experience

Attraction Type
Geological Formation
Main Features
Travertine cone; Lower Terraces boardwalk; Palette Spring
What Youll See
A 37-foot white travertine cone, steam and mineral crusts, active thermal terraces nearby, and a network of boardwalks through the Lower Terraces.
Unique Characteristics
Remnant of an active hydrothermal feature; named by the Hayden Survey in 1871 after the Liberty Cap worn in the French Revolution; 11 meters tall with base dimensions comparable to its height.
Photo Opportunities
Golden hour over Liberty Cap; side-light on travertine surfaces; steam plumes in cool air.
Photography Spots
Boardwalk overlooks; Palette Spring vantage; sunrise-forward angles along the Lower Terraces
Best Viewpoints
From the Lower Terraces boardwalk near Liberty Cap; lookouts along the loop for varied geological angles.
Common Wildlife
Elk
Best Wildlife Times
Dawn and dusk
Geological Formation Type
Travertine cone
Scientific Interest
Visible travertine deposition within Yellowstone's hydrothermal plumbing; a 2,500-year record of mineral growth tied to geothermal heat flow from the caldera region
Stargazing Quality
Excellent

Facilities, fees & access

Entry Fees
Varies
Permits Required
No
Restrooms Available
Yes
Restroom Type
Flush
Picnic Areas
No
Water Available
No
Cell Service
Cell service: Limited and inconsistent in the Mammoth Hot Springs area; plan ahead with offline maps.
Interpretive Signs
Yes
Accessibility
Boardwalks with some wheelchair-accessible sections; steep grades in transitions; plan for assistance as needed
Accessibility Level
Drive-up view; boardwalks with wheelchair-accessible sections; some transitions to stairs may require assistance.
Nearby Services
Restrooms near Mammoth Hot Springs; interpretive signs; parking areas nearby
Nearby Facilities
Restrooms near Mammoth Hot Springs; interpretive signs; parking areas nearby
Family Friendly Notes
Explain the heat risk; keep children away from boardwalk edges; hold hands near drops

Safety

Safety Considerations
Thermal burns risk; stay on boardwalks; boardwalks wet and slippery; fragile thermal crusts can crumble; wildlife at a distance; follow park safety rules; traction cleats in winter.

Nearby

Nearby Attractions
Palette Spring; Lower Terraces; Mammoth Hot Springs area
Connecting Trails
Rim trails and loop segments along the canyon edge
Trailheads Here
Liberty Cap boardwalk from the Liberty Cap parking area; access to Palette Spring and Lower Terraces

Planning advice

Insider Tips
  • Capture early light when steam rises off the cone.
  • Look for the layered mineral growth on the cone itself.
  • Park early to secure a space near Liberty Cap.
  • The cone is a fossil of past hydrothermal activity—a geology lesson in stone.
Tips Advice
  • Stay on boardwalks; thermal crusts are fragile.
  • Wear traction cleats in winter; boardwalks can be icy.
  • Bear spray is commonly recommended in Yellowstone; keep distance from wildlife.
  • Arrive early to beat crowds; parking near Liberty Cap can fill by afternoon.
  • Use interpretive signs to understand travertine growth patterns.

More details

Park Area
Mammoth Hot Springs, Yellowstone National Park
Elevation Feet
0
Visitor Center Present
Yes
Guided Tours Available
No
Fishing Nearby
No
Swimming Allowed
No
Boating Allowed
No
Climbing Areas
No
Review Summary
Visitors rate Liberty Cap for the clear example of travertine growth and the boardwalk that circles the base. Interpretive signs help explain the depositional process and Yellowstone's geothermal history.

Location

Liberty Cap travertine formation at Yellowstone National Park, reflected in a mineral pool with a colorful mineral terrace and blue sky above.Liberty Cap travertine cone rises near Mammoth Hot Springs in Yellowstone National Park, framed by a boardwalk and colorful mineral terraces.Liberty Cap terraces at Yellowstone National Park glow under a bright blue sky with steaming travertine steps.Liberty Cap geothermal feature with steam vents in a barren travertine field, Yellowstone National Park.

Frequently asked questions

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

Yes. Parking near Liberty Cap can fill by the afternoon, especially in peak season; arriving early yields easier access and shorter waits.

Is it worth the 135-yard boardwalk to see Liberty Cap?

Yes. The boardwalk provides close views of a 37-foot travertine cone and lets you read signs that explain 2,500 years of mineral deposition and hydrothermal activity.

Can I bring kids or an elderly relative to Liberty Cap?

Yes, but plan for the boardwalk transitions; some sections are flat and wheelchair-accessible while others include stairs or slopes. Stay close and supervise near edges.

Is the water or cone safe to touch?

No. Hydrothermal water is extremely hot and mineral crusts are fragile; touching can cause burns and damage the depositional structure.

What should I expect for wildlife while viewing Liberty Cap?

Elk and other wildlife frequent the Mammoth area; keep a safe distance, follow park guidelines, and do not approach animals.

Grand Prismatic Spring

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

Yellowstone Lake

Caldera lake tilted by resurgent domes; hydrothermal vents dot the lakebed.

Lake Butte Overlook

Panoramic view of Yellowstone Lake from the caldera rim; distant Tetons on clear days.

Artist Point

Lower Falls overlook; canyon walls colored by hydrothermal alteration of rhyolite.

Gibbon River

84 ft Gibbon Falls; river through hydrothermal basins along Grand Loop Road.

Gibbon Falls

84-foot cascade over an ancient Yellowstone lava flow; drive-up overlook with a wheelchair-friendly path.

Sources

Editorial review: YourNPGuide Editorial Team. Information is compiled from official sources, verified traveler reviews, and editorial research; no firsthand visit is implied unless explicitly documented. Learn how YourNPGuide works.

Last updated January 2026. Report an issue.