The best walks and hikes around Warner Valley
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Hikes around Warner Valley explore a forested, geothermal landscape within Lassen Volcanic National Park. The region is characterized by its active hydrothermal areas, including boiling lakes and steam vents, connected by a network of trails. The Pacific Crest Trail passes through the valley, offering access to its notable natural features.
Best hiking trails around Warner Valley
- The most popular hiking route is Boiling Springs Lake and Terminal Geyser via the Pacific Crest Trail โ Lassen Volcanic National Park, aโฆ
Last updated: April 27, 2026
8.17km
02:38
370m
310m
Embark on the Mount Harkness Loop Trail, a moderate 5.1-mile (8.2 km) hike that takes about 2 hours and 38 minutes to complete. You will climb 1208 feet (368 metres)โฆ
1.19km
00:20
10m
30m
Embark on an easy hike along the Boiling Springs Lake Trail, a short 0.7-mile (1.2 km) route that takes about 19 minutes to complete. You'll experience a gentle ascent ofโฆ
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5
hikers
9.23km
02:47
310m
310m
Embark on a moderate hike along the Terminal Geyser Trail, covering 5.7 miles (9.2 km) with an elevation gain of 1002 feet (305 metres). This journey typically takes around 2โฆ
3
hikers
24.8km
07:16
700m
700m
Embark on a difficult hiking adventure along the Pacific Crest Trail: California Section N, a challenging 15.4-mile (24.8 km) route. You will navigate through lush forests, experiencing a unique geologicalโฆ
1
hikers
11.2km
03:07
200m
200m
Embark on the Caribou Lakes Loop, a moderate hiking route that guides you through a diverse landscape of mixed conifer forests and open alpine tundra. You will encounter areas ofโฆ
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Tips from the Community
Although it is known and named as a geyser, the Terminal Geyser is more like a steam vent than a true geyser. That does not make it less impressive. To get here, you have to follow a narrow, sometimes not that obvious trail. You can even climb down all the way to the steam that reveals a certain smell like rotten eggs. Always be careful around hydrothermal areas!
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"For your safety, stay on established trails and boardwalks. Ground in hydrothermal areas can look solid but may actually be a thin crust hiding pools of acidic boiling water or mud. Traveling off-trail in these areas may result in severe injury. Read more about exploring the park hydrothermal areas." https://www.nps.gov/lavo/planyourvisit/hiking_terminal_geyser.htm
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Basin fens originated as lakes or ponds and formed as the pond was filled with partially decomposed plant remains. Basin fens are typically flat and occur near or on the margin of open water. Basin fens are widespread in North America and may be quite large, such as surrounding Domingo Lake https://www.fs.usda.gov/wildflowers/beauty/California_Fens/types.shtml
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"Indian Meadow (near Hay Meadow) and the lake for which the wilderness is named... have been identified by the forest service for having ancient forests of white fir, western white pine, sugar pine, lodgepole pine, red fir, incense cedar and Jeffrey pine." https://en.wikipedia.org/wiki/Caribou_Wilderness
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The Mount Harkness Fire Lookout sits on the summit of Mount Harkness. The lookout has been in operation since its construction in 1930. Seasonal staff stationed at the lookout continue the vigil today and are often available to answer visitor questions and demonstrate fire lookout techniques. At an elevation over 8,000 feet, Mount Harkness provides excellent views of the park and distant mountain ranges.
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Take the loop or hike at least along the east side of the pond. Here are the most existing geothermal activities like bubbling mudholes and steaming soil. The mudholes are not visible from the west shore.
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There is lots of space for tents around Boundary Spring - however this is a very badly burned area with lots of dead trees that will fall itself or you might be hit by falling branches. My advice to reduce the risk: Get your water from the spring, hike on into Lassen National Park for ~ 0.2 miles, turn left onto the Willow Lake Trail, follow the faint trail for another ~ 0.3 miles to the trailhead. There is room at the dead end and you will be outside the park boundary again.
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Frequently Asked Questions
Are dogs allowed on the trails in Warner Valley?
No, dogs are generally not permitted on hiking trails within Lassen Volcanic National Park, which includes the Warner Valley area. They are allowed in developed areas like campgrounds and on paved roads, but must be leashed at all times. For specific regulations, it's best to check the official park website.
What is the best time of year to hike in Warner Valley?
The best time to hike in Warner Valley is typically from July through September. The valley is at a high elevation, and snow can linger on trails well into the summer. This period offers the most reliable snow-free conditions and pleasant weather for exploring the geothermal features and forests.
Are there any easy, family-friendly hikes in the area?
Yes, there are options suitable for beginners and families. For a gentler experience, consider the Section Old Red Bluff Road to Baccala Ranch. It's a relatively flat and straightforward walk that still allows you to experience the beautiful forest landscape of the region.
How do I get to the Warner Valley Trailhead?
The Warner Valley Trailhead is located in the southeastern corner of Lassen Volcanic National Park. Access is via a dirt road that may be rough, so a vehicle with higher clearance is recommended. The road is typically closed during the winter and spring due to snow. Always check current road conditions on the official National Park Service website before you travel.
What kind of geothermal features can I see on the trails?
The hikes in Warner Valley are famous for their hydrothermal wonders. Trails lead to features like Boiling Springs Lake, a large, acidic, milky-green lake that appears to be boiling, and Devil's Kitchen, an area with steaming fumaroles and bubbling mudpots. These sights offer a direct look at the volcanic activity that shapes the park.
Are there any circular or loop trails available?
Yes, you can find loop hikes in the area. The Hay Meadow to Long Lake Loop is a great option that takes you through the adjacent Caribou Wilderness, offering a different perspective on the region's forests and lakes. Another choice is the Juniper Lake Loop Trail, which provides a scenic walk around the lake.
Can I hike a section of the Pacific Crest Trail (PCT) as a day hike?
Absolutely. The Pacific Crest Trail runs directly through Warner Valley, making it very accessible for day hikers. You can start at the main trailhead and hike a portion of the PCT to experience this famous long-distance trail. Many of the area's key attractions, like Boiling Springs Lake, are reached via the PCT.
What should I pack for a day hike in Warner Valley?
You should pack layers of clothing as mountain weather can change quickly. Sturdy hiking shoes are essential. Also bring plenty of water, snacks, sun protection (hat, sunscreen), and a map of the area. Since you'll be in a volcanic area, it's wise to stay on marked trails and respect all warning signs near hydrothermal features.
Are there any challenging hikes for experienced hikers?
Yes, the region offers strenuous routes for those seeking a challenge. The Butte Pond to Boiling Springs Lake hike is a difficult, 15.4-mile (24.8 km) trek along the Pacific Crest Trail with significant elevation gain, rewarding hikers with a deep immersion into the Lassen National Forest.
Where can I find official information about the Warner Valley Day Use Area?
For the most current official information, including alerts, road closures, and facility status for the Warner Valley Day Use Area, you should visit the National Park Service website. You can find details at the official NPS page for the area.
What do other hikers think of the trails around Warner Valley?
The trails in this area are highly regarded by the komoot community, with an average rating of 4.5 stars. Hikers often praise the unique experience of walking through active geothermal areas and the beauty of the surrounding forests and lakes within Lassen Volcanic National Park.
Is there camping available near the Warner Valley Trailhead?
Yes, the Warner Valley Campground is located near the trailhead. It's a small, rustic campground that operates on a first-come, first-served basis. Due to its remote location and popularity, it's a good idea to arrive early to secure a spot, especially on weekends during the peak summer season.
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