Mammoth Hot Springs, Yellowstone National Park, USA.

Mammoth Hot Springs is an exceptional geothermal site located in the Yellowstone National Park. It has the largest number of hot terraces in the world.

In the north of Wyoming, at the foot of Mount Everst, this exceptional thermal site is unlike anything we have seen in Norris Geyser Basin for example. No geysers spewing acid waters or no transparent blue pools. Yet, this place is the expression of the volcanic forces that have been working in Yellowstone for hundreds of thousands years.

Here is a guide to visiting the unique and spectacular Mammoth springs in Yellowstone National Park.

Click on the picture to enlarge:

relief map of mammoth hot springs

1. Where are the Mammoth springs?

Mammoth Hot Springs is located in the northwest of the Yellowstone Park, near the North Entrance , close to gardiner (Mont.).

The map below shows the different access (time and mileage) to the main sites of the park.

2021 will see 3 major road projects in order to meet the challenges of the increase of the park visitation and trafic :

1. Closure of the road between Tower-Roosevelt and Canyon Junction
2. Works of repairs on Old Faithful overpass Bridge will cause delays up to 15 mn.
3. Works on infrastructure around the North Entrance will change the trafic pattern,

Check the up-to-date information about temporary road closures.

Click on the image to enlarge :

Yellowstone road map with mileage
Consult the official map of Yellowstone to better locate Mammoth Hot Springs

2. Mammoth Hot Springs Map

This map shows the services (lodging, restauration, medical, post office…) provided on the site.

Allbright Visitor Center opens on July 1st. Check the opening and closing dates before going.


3. What is Mammoth Hot Springs?

It is one of the most active geological area on Earth. Yellowstone National Park is located above a huge magmatic chamber.

Rain waters seep into the rocks, and once they reach a certain depth, they are heated by the action of boiling magma. Then they rise back to the surface of the earth. Unlike at Norris Geysers Basin, the waters at Mammoth Hot Springs are not expelled into the air. They cross the rocks up and deposit limestone sediments on the surface. The warm waters slowly flow from one basin to another, forming terraces as shown in the picture below.

Over thousands of years they have formed terraces called travertins formations.

mammoth springs yellowstone national park

Mammoth Hot Springs-travertine formation

4. Best way to visit the Mammoth Springs?

This hydrothermal site is located less than half a mile from Albright Visitors Center, on the Grand Loop Drive that bypasses the site. Several parking areas have been set up along the road for easy access to the major formations.

Mammoth Hot Springs includes 3 large terraces, the Upper and Lower terraces and Main terrace.

The Upper Terraces are accessible by the 1,5 miles long Upper Terrace Drive. It runs among the travertine formations so that you can explore the site with your car.
But the best way to discover this unique geological curiosity is on foot. Boardwalks have been specially arranged so that visitors can move from one terrace to another and discover these surprising limestone formations.

This is the hiking map to discover the Mammoth springs.


5. Explore the travertine terraces

We stop at the first parking area of Grand Loop Drive, just in front of the famous curiosity, Liberty Cap.
It is a conical rock, 45 feet high, formed by the limestone deposits of an old hot spring formerly active.

Just behind, we observe Palette Spring, one of the most striking attraction of Mammoth Hot Springs. It flows over some white limestone and orange travertine deposits.

Yellowstone-Mammoth Spring-Palette Spring

Yellowstone National Park – Palette Spring

From here, we stroll on the boardwalks and staircases to move safely from one terrace to another and get to Main Terrace.

voyage Yellowstone Mammoth Springs Terraces of Main Spring

Yellowstone- Terraces of Main Spring

We walk in front of absolutely incredible geological formations, looking like stalactites or limestone basins as we see them in underground  caves. One day in Mammoth Hot Springs is a “journey to  the center of Earth”, but outdoors!
We are impressed by the rock formations but even more by their colors. Yellow, gold, orange! All these dazzling hues are due to the presence of bacterias and algae that flourish in the extremely hot waters of the springs.

We work our way up to the Upper Terraces (also accessible from Upper Terrace Drive). We observe noticeable features such as Orange Spring Mound and Grassy Spring. This elevated situation allows to contemplate the magnificent views of the valley.

Yellowstone-Mammoth Hot Springs-Grassy spring

Yellowstone – Grassy spring

The walk ends with Canary Spring, awesome spring whose name is due to its saffron color. Its dazzling white sediments, on which the yellow hot waters flows slowly from the Upper Terraces, offer a unique and magnificent view. The presence of dead skeletal trees emphasized the inhospitable character of the area.

Yellowstone National Park-Mammoth-Canary Spring

Yellowstone National Park – Canary Spring

6. Mammoth Hot Springs weather – When to go ? 

Generally speaking, Winter weather in Yellowstone is very cold and snowy, with temperatures below zero. Besides, the services provided in this area are closed during this season. The Albright Visitor Center only opens on july 1st.

Summer is warm, even stormy in the late afternoon. However, the nights can be cool.

Temperatures become pleasant and sunny between May-June (average low 34°F-41°F). September- October starts to get cool or even cold (average low 29.4°F, average high 55.7°F). Snowfall is common.

Since the weather in the park is unpredictable, check the current conditions before going.

7. Mammoth Hotels

Hotels in the Yellowstone National Park, near the Mammoth springs:

Mammoth Hot Springs Hotel is the only accomodation in the Yellowstone Park located near the terraces.

It is accessible via the North Entrance in Gardiner, (see Yellowstone map). This historic hotel offers a charming experience in the heart of the park. It is even possible to observe bisons grazing a few feet from the hotel!

The cabins opens from may 7th to octobre 11th, the hotel lodgings opens from april 30th to novembre 28th

Another hotel is located at Tower Falls, 18 miles from Mammoth Hot Springs: the Roosevelt lodge & cabins offers a rustic woodland atmosphere.

Hotels in Gardiner

Outside the Yellowstone Park, Gardiner has accommodation options. We have listed 4 top ranked hotels for the quality of their accommodation and proximity to the park :

Ridgeline hotel (formely Best Western),

Yellowstone Gateway Inn,
406 Lodge at Yellowstone,
Yellowstone park riverfront cabins.

8. Mammoth Campgrounds

The Mammoth area counts 2 campgrounds: Mammoth campground and Indian Creek campground. They both have access to fishing and hiking.

Mammoth Campground

This is the only campground in the park open year-round. It is located 5 miles south of the park’s North Entrance.

Reservation is required at the National Park Service.

To know more about the Mammoth Campground.

Indian Creek Campground

Located about 8 miles south of Mammoth Hot Springs on the road to Norris, Indian Creek Campground is open from June to September. No reservation is required, it is a first-come, first-served campground.

For more information on the Indian Creek Campground.

9. Other 

It takes approximately 2 hours to visit the site. It can be longer if you join a park ranger program.

Mammoth Hot Springs is accessible to wheelchair users. Ask the Visitors Center for accessible areas.

To conclude:  Don’t leave Yellowstone National Park without visiting Mammoth Hot Springs. This site is so different from the other hydrothermal areas. It teaches us a lot about the forces that are at work in the heart of our planet Earth.

Maps credit : U.S. National Park Service, restoration/cleanup by Matt Holly, Public domain, via Wikimedia Commons.

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mammoth hot springs yellowstone


mammoth springs yellowstone


  1. No sorry, they are protected. Use instead the ones in Wikimedia Commons.

  2. Hi there????
    Great blog!
    I wanted to mention my trip to Yellowstone on a ladies Facebook page but I can’t find my pictures of Mammoth. May I use one of yours? It’s non commercial. It’s called “Over 60 solo women travellers”. Thanks, Shari Day