Vulcan Hot Springs in Idaho is a wild hot spring in the beautiful Boise National Forest, about 32 miles from Cascade. It was once the largest natural hot springs pool in Idaho. The large water pool is now gone, and the area is covered in dirt and debris from forest fires.

It is, however, still a great spot to hike to. To reach Vulcan Hot Springs, follow a scenic 0.75-mile trail that begins at the edge of a primitive camping area near Stolle Meadows.

The path winds through the thick pine and fir forest, crossing three rustic log footbridges over streams and hugging the banks of Warm Springs Creek. The trail is primarily flat but can be occasionally muddy, overgrown, or rocky, especially after rain.

You will be able to tell that the spring is nearby: the forest will open up, and you will feel a distinct smell of sulfur in the air.

Vulcan Hot Springs - Geothermal Water & Soaking

Natural mineral water pours from its hillside source at 190°F. As the water flows down and cools off.

Before the forest fires, there used to be a giant pool 30 feet across. There is no pool now. Some visitors dig out small pools for themselves, but we, in good conscience, cannot recommend soaking there. Water temperatures tend to vary a lot and can get very hot very fast.

Beyond Hot Springs: Other Adventures

The area around Vulcan Hot Springs is packed with things to do. Those appreciating the outdoors will love it.

Wildlife Watching: Deer, birds, and chipmunks are regularly sighted near where the pool used to be.

Fishing & Hiking: The South Fork Salmon River is a great fishing spot. The Boise National Forest is full of hiking trails.

Camping: An unofficial camping area is right by the trailhead, just a mile south of Stolle Meadows.

Winter Sports: If you visit in winter, do bring your snowshoes! The road will likely be covered in snow.

Location: Boise National Forest • 32 miles northeast of Cascade • Idaho • USA
Open: Year-round
Development: Primitive
Clothing: Optional
Amenities & Services: None

Hiking distance: 0.75 mile one-way trail
Road access: Any vehicle, except during winter
Day-use fees: None

Elevation: 5,600 ft (1,707 m)