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HSA: Cougar, Kitson, Summer Lake & Fire Amoeba

Oregon’s hot springs are constantly changing, whether it’s a new access rule, a property changing hands, an event bringing people together around geothermal waters or a scientific discovery revealing just how extraordinary these environments can be.


Here are four recent hot springs stories worth knowing about, from expanded access at one of Oregon’s most popular soaking destinations to a remarkable new discovery in the geothermal waters of Northern California.

Terwilliger Hot Springs Gets Longer Hours, More Parking & Rule Changes

Cougar Hot Waterfall
A Slice of the Google Life at Cougar

There’s some good news for visitors planning a soak at Terwilliger (Cougar) Hot Springs in the Willamette National Forest.

The popular hot springs are now open from sunrise until 10 p.m., extending the previous closing time of dusk. The parking area has also been expanded to accommodate approximately twice as many vehicles.

The changes follow the reopening of the hot springs earlier this year after a bridge restoration project.

Visitors will also find new on-site hosts at the entrance. Hosts can help with parking, payments, capacity and site rules, adding a more visible management presence at a destination that has become increasingly busy.

Terwilliger remains first come, first served, with a 65-person maximum capacity and a two-hour soaking limit. The current fee is $12 per person for visitors age 12 and older.

There are a few important rules to keep in mind, too. Dogs are no longer permitted at the site, including along the trail to the springs and alcohol is prohibited. The hot springs remain a day-use destination, with camping available only at developed campgrounds in the Cougar Recreation Area.

Why it matters

Terwilliger is one of Oregon’s most popular natural hot springs, so even relatively small infrastructure changes can have a noticeable effect on the visitor experience.

The expanded parking and longer hours should give visitors more flexibility, while on-site hosts may help improve compliance with capacity limits and other rules.

The tradeoff is that better infrastructure can also make an already popular destination easier to visit. If you’re looking for a quieter experience, weekday and early-day visits may still be your best bet.

Read more: Terwilliger Hot Springs guide


Kitson Hot Springs Enters a New Era of Preservation and Public Access

Kitson Bathhouse Hot Springs Remains
Kitson Bathhouse Hot Springs Remains

After years of uncertainty, Kitson Hot Springs near Oakridge has a new future taking shape.

The historic 159-acre property was sold on April 17, 2026, for $2.1 million to a Eugene-area family. The new owners have entered into a memorandum of understanding with the City of Oakridge focused on keeping the property as a low-impact public sanctuary.

Plans under consideration include restoring the springs for day-use soaking, developing hiking and biking trails, creating opportunities for low-impact camping and environmental education and potentially offering wellness retreats.

There is an important distinction here, however: Kitson is not currently open for public soaking.

The property is still going through the rezoning process for its four parcels, and the owners are working with the city on the steps necessary to eventually bring public access back to the site.

That makes this story particularly interesting for Oregon hot springs enthusiasts. Kitson has a remarkable history as a historic bathhouse and resort, followed by decades as a Boy Scout property. The possibility of returning some form of public access to the springs represents a significant change in the property’s trajectory.

Why it matters

Kitson is a good example of how the future of a hot spring can depend as much on land ownership and stewardship as it does on the spring itself.

For now, the most important thing for visitors to know is that the property remains closed to public soaking. The potential reopening is something to watch, rather than an invitation to visit before access is officially established.

Read more: Kitson Hot Springs: A New Chapter of Public Access and Preservation


Summer Lake Hot Springs Hosts a Three-Day Desert Campout

Connection Campout 2026

If soaking beneath a high-desert sky sounds appealing, Summer Lake Hot Springs has a unique event coming up this fall.

Connection Campout takes place October 8–10, 2026, bringing three days of music, art, wellness programming, camping and hot springs to the remote Eastern Oregon property.

The event combines underground electronic music with yoga, breathwork, sound healing, workshops, art installations and access to Summer Lake’s geothermal pools.

The organizers describe it as a community-oriented gathering rather than a conventional music festival. The event is being held on private property and is ticketed, with both three-day and single-day passes available.

Camping is available on-site, including car and tent camping, with limited dry RV sites. Organizers are also emphasizing zero-waste practices, reusable dishes and cups, carpooling and Leave No Trace principles.

Why it matters

Summer Lake Hot Springs has long hosted occasional festivals and workshops, but Connection Campout illustrates a broader trend in the hot springs world: geothermal destinations are becoming gathering places for experiences that extend well beyond soaking.

At Summer Lake, the hot springs, high-desert landscape, camping, wellness programming and arts scene are being brought together into one experience.

For anyone planning a visit, October’s high-desert temperatures are worth remembering. Organizers specifically advise bringing warm layers because nighttime temperatures can be cold.

Event: Connection Campout, October 8–10, 2026
Location: Summer Lake Hot Springs, Lake County, Oregon
Official site: Connection Campout


Scientists Discover a Record-Breaking Amoeba in Lassen’s Hot Springs

Not all interesting hot springs news is about access or travel.

Scientists have discovered a previously unknown species of amoeba living in the geothermal waters of Lassen Volcanic National Park in California, and this tiny organism has an extraordinary ability to tolerate heat.

The species, named Incendiamoeba cascadensis, can carry out cell division at temperatures as high as approximately 145°F (63°C). It can remain active at around 147°F (64°C) and was able to recover after brief exposure to temperatures approaching 158°F (70°C).

According to research published in Cell, the organism represents a new record for heat tolerance among eukaryotic life.

The amoeba lives in a relatively neutral-pH geothermal environment near Lassen’s Drakesbad area. Researchers found that it feeds on heat-loving bacteria, effectively occupying the top predator position within its extremely hot microbial ecosystem.

The discovery is a fascinating reminder that a hot spring isn’t simply a warm place to swim. Geothermal systems can contain highly specialized ecosystems adapted to conditions that would be lethal to most familiar forms of life.

Why it matters to hot springers

For those of us who spend time around natural hot springs, discoveries like this add another dimension to the places we visit.

A geothermal pool may look like a simple collection of hot water and rocks, but beneath the surface can be an entire microbial community adapted to temperature, chemistry and conditions found nowhere else.

That is another reason to treat natural hot springs carefully. Avoid introducing soap, sunscreen, food or other contaminants into the water, and don’t disturb microbial mats or other unusual formations.

The microscopic life living in and around geothermal systems is part of what makes these places scientifically valuable.

Read more: NPR: This ‘fire amoeba’ pushes the limit of what’s possible for complex life


What These Stories Tell Us About Oregon’s Hot Springs

Taken together, these four stories illustrate just how many different forces shape the hot springs experience.

  1. Access is changing. Terwilliger has more parking, longer hours and increased on-site management.
  2. Historic properties are changing hands. Kitson could eventually return to some form of public use after decades of restricted access.
  3. Hot springs are becoming destinations for more than soaking. Summer Lake continues to combine geothermal bathing with camping, wellness, music and art.
  4. And the science keeps getting more interesting. The discovery at Lassen demonstrates that geothermal waters can support remarkably specialized forms of life.

For hot springers, that means these places are worth experiencing, but they’re also worth protecting. The water, geology, wildlife, microbial communities, forests and surrounding landscapes are all part of the experience.

As access and interest continue to grow, responsible soaking becomes increasingly important.

Leave no trace. Keep soap and other contaminants out of natural springs. Respect closures and private property. And leave these extraordinary places at least as good as you found them.

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