Lava Hot Springs
430 E Main St
Lava Hot Springs, ID
A tiny town built around naturally hot, odorless mineral pools that the Shoshone-Bannock have called medicine water for generations, with a lazy tubing river running right through the middle.
Lava Hot Springs is one of those places where the ground does the work. Deep beneath the Portneuf River valley, rainwater sinks thousands of feet, gets heated by the earth, and rises back to the surface at a steady 102 to 112 degrees, laden with minerals and, unusually, entirely free of the rotten-egg sulfur smell most hot springs carry.
For countless generations the Shoshone-Bannock people have known these springs as Poha-Ba, or medicine water, a place of healing and renewal, and by tradition neutral ground where even rival groups could bathe in peace. Today the springs anchor a small town that has turned the valley into one of Idaho's most beloved soaking destinations.
What Travelers Love
- Soaking in a chain of naturally hot mineral pools that stay warm year round and, unlike many hot springs, have no sulfur smell
- Floating and tubing the Portneuf River right through the center of town on a hot summer day
- The mix of a genuine geothermal wonder with a friendly, low-key small-town feel
- A soak under falling snow in winter, with the steam rising off the pools
Worth Knowing
- The main hot pools and the summer water park are separate facilities, so check which one fits your plans
- River tubing is a warm-season activity and the Portneuf can run fast in early summer, so mind the current and the takeout
- This is a popular getaway, so weekends and holidays fill up
- The pools stay open through winter and are wonderful in cold weather, but the tubing does not
Learn about Lava Hot Springs
The springs and their keepers
The Shoshone-Bannock relationship with these waters is the oldest chapter of the story and a living one, honored in the name Poha-Ba and in the tradition of the springs as peaceful, shared ground. Their descendants remain a present community in southeast Idaho.
As settlers arrived, the reputation of the healing waters spread, and the town grew up specifically to share them. The pools are managed today as a public facility, which keeps them accessible rather than locked behind a single resort.
How the water gets hot
The heat is geothermal, not volcanic in the erupting sense. Rain and snowmelt seep down through cracks in the rock to depths of roughly eight to ten thousand feet, where the earth's interior warms the water in underground reservoirs.
Pressure then pushes that hot water back to the surface, where it emerges at a remarkably constant temperature. Because the water moves through mineral-rich rock rather than sulfur beds, it comes out clean and odorless, which is a large part of the appeal.
The river and the seasons
In summer the Portneuf River becomes the town's second attraction, a gentle float that carries tubers right past the shops and under the bridges. It is a rite of a southeast Idaho summer.
Winter flips the mood entirely. The tubing river goes quiet, but the hot pools become their best, wreathed in steam while snow falls around them. Spring and fall are the quiet shoulder seasons, good for a soak without the crowds.
The town and the valley
For all its fame, Lava Hot Springs is a genuinely small town, its main street lined with cafes, ice cream stops, and shops within easy walking distance of the pools. That compactness is part of the charm, since you can soak, eat, and wander without ever getting in the car.
The setting helps too. The Portneuf River valley narrows here between lava-rock hills, and the surrounding southeast Idaho country of ranchland, mountains, and back roads rewards a slow exploration once you have had your soak.
Closest Boutels
The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.
Details
Lava Hot Springs, ID
Frequently asked questions
What is Lava Hot Springs?
Lava Hot Springs, a resort town in southeastern Idaho, is famous for its natural geothermal hot springs, where mineral-rich water flows from the earth into soaking pools that have drawn visitors for generations. The town is home to developed hot-spring pools where people relax in the warm, odorless mineral waters, as well as the Portneuf River running through town, popular for summer tubing and swimming. A beloved year-round destination, Lava Hot Springs offers soothing soaks amid scenic surroundings, especially wonderful in the cooler months. With its natural hot springs and river recreation, Lava Hot Springs offers a delightful destination in Idaho.
What can you do at Lava Hot Springs?
You can soak in the warm, mineral-rich natural hot-spring pools, relax in the geothermal waters that flow from the earth, tube and swim in the Portneuf River through town in summer, enjoy the resort town's shops and dining, and take in the scenic surroundings. Soaking in the hot springs, delightful in any season, and summer river tubing are the highlights. The developed pools make soaking easy and comfortable. With its soothing hot-spring pools and summer river fun, Lava Hot Springs offers a relaxing and enjoyable experience in southeastern Idaho.
Are the hot springs at Lava Hot Springs good for soaking?
Yes, the hot springs at Lava Hot Springs are especially prized for soaking, as the mineral-rich geothermal water is warm, comfortable, and notably free of the sulfur smell common at many hot springs, flowing into developed pools of varying temperatures where visitors relax. Because the water is hot, soakers should limit their time, stay hydrated, and take care, especially children, older visitors, and anyone with health conditions affected by heat. Soaking in the pleasant, odorless mineral waters is the beloved highlight of a visit to Lava Hot Springs in Idaho.
When is the best time to visit Lava Hot Springs?
Lava Hot Springs is a year-round destination, with the hot-spring soaking especially wonderful in the cooler months of fall, winter, and spring, when a warm soak amid crisp air or snow is delightful, while summer is the peak season for river tubing and swimming in the Portneuf River along with soaking. Each season offers its own appeal. Winter soaking in the steaming pools is magical. For hot-spring soaking aim for any season, especially the cooler months, and for river tubing, summer, at Lava Hot Springs in southeastern Idaho.
What is near Lava Hot Springs?
Lava Hot Springs is a resort town in southeastern Idaho, near the Portneuf River, within reach of Pocatello with the Idaho Museum of Natural History, the Soda Springs area with Hooper Spring, and the Bear Lake region. That makes Lava Hot Springs a delightful stop to combine with the Soda Springs area, Pocatello, and the other attractions of southeastern Idaho on a visit to the state.
Nearby
Portneuf River Float
0.4 miles away
A fast, rapid-filled tube float on the public Portneuf River, running right through the middle of Lava Hot Springs.
World Famous Hot Pools
0.5 miles away
Natural hot mineral pools at the east end of Main Street in Lava Hot Springs, sitting on land set aside for public use since 1902 and run today by the Idaho Department of Parks and Recreation.
Historic Chesterfield
18 miles away
Historic Chesterfield is a preserved Mormon pioneer town standing almost whole on a high sagebrush plateau above the Portneuf River.