
Bumpass Hell
Explore California's 'mini Yellowstone' at Bumpass Hell, a geothermal wonderland with bubbling mud pots and steaming springs.

Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
Trail typically open, avoid snow

Bumpass Hell
Best Time
Trail typically open, avoid snow

Highlights
Must-see attractions
Explore California's 'mini Yellowstone' at Bumpass Hell, a geothermal wonderland with bubbling mud pots and steaming springs.
"It's like stepping onto another planet with bubbling mud pots and steaming vents!"

Check Trail Status First! ⚠️
Bumpass Hell is snow-covered much of the year. Always check the official park website for current opening dates before you go!
Embrace the Sulfur Smell! 👃
The strong sulfur odor is normal! It's part of the unique geothermal experience, like a mini Yellowstone.

Quick Facts
Hours
Rating
4.8 · 432 reviews
Type
Hiking Area
Highlights
Discover the most iconic attractions and experiences

Bubbling Mud Pots & Fumaroles
Bumpass Hell Trail
Witness the earth's raw power with bubbling mud pots and steaming fumaroles. An otherworldly landscape that feels like another planet.

Boiling Springs
Bumpass Hell Trail
Marvel at vibrant, boiling springs showcasing intense geothermal activity. The colors and steam create a dramatic natural spectacle.

Otherworldly Landscapes
Bumpass Hell Trail
Explore a unique, clay-colored terrain devoid of much plant life due to the heat. It's an alien-like environment that captivates visitors.
Plans like a pro.
Thinks like you
Planning Your Visit
Timing is Everything for Bumpass Hell
Embrace the Sulfur Scent!
Best Times
Insider Tips
from TikTok, Instagram & Reddit
Check Trail Status First! ⚠️
Bumpass Hell is snow-covered much of the year. Always check the official park website for current opening dates before you go!
Embrace the Sulfur Smell! 👃
The strong sulfur odor is normal! It's part of the unique geothermal experience, like a mini Yellowstone.
Wear Comfortable Shoes :athletic_shoe:
The 3-mile round trip hike is moderately difficult with some elevation gain. Sturdy footwear is recommended for the trail.
Go Early to Beat Crowds 🌅
This is a popular hike. Arriving early in the morning helps you avoid the biggest crowds and get better photos.
Tips
from all over the internet
Check Trail Status First! ⚠️
Bumpass Hell is snow-covered much of the year. Always check the official park website for current opening dates before you go!
Embrace the Sulfur Smell! 👃
The strong sulfur odor is normal! It's part of the unique geothermal experience, like a mini Yellowstone.
Wear Comfortable Shoes :athletic_shoe:
The 3-mile round trip hike is moderately difficult with some elevation gain. Sturdy footwear is recommended for the trail.
Go Early to Beat Crowds 🌅
This is a popular hike. Arriving early in the morning helps you avoid the biggest crowds and get better photos.
Bring Water & Snacks :water_wave:
While the hike isn't extremely long, it's at high elevation. Stay hydrated and bring snacks to enjoy.
What Travellers Say
Reviews Summary
Visitors rave about Bumpass Hell's otherworldly landscapes, comparing it to Yellowstone with its bubbling mud pots and steaming fumaroles. The unique geothermal activity and the well-maintained boardwalks are frequently praised. However, some find the sulfur smell strong, and the trail's seasonal accessibility can be a point of frustration if not checked in advance.
"This has to be the most popular hike in Lassen Volcanic National Park by far. We got here around 3pm the Sunday of Labor Day weekend on our way out of the park after summiting Lassen Peak. There were cars parked along the road for almost a quarter mile, so we found a spot next to Helen lake on a slightly sketchy incline, and found a connector trail to the actual Bumpass trail. It was absolutely packed with people, with very few chances to pick up the pace. You have to ascend around 200 feet in a mile before you start seeing any thermal activity. Once there, the hot springs are well worth spending some time at. Constantly fuming geysers make for some great videos. There is a nice boardwalk going right through them. The smell of sulphur is omnipresent."
Vipul Singh
"Bumpass Hell is a fantastic hike with good thermal activity. The hike is at high elevation so the trail usually doesn’t open until July (sometimes as late as August) and closes late October early November due to snow. Make sure to check the trail status before you leave if you really have your heart set on hiking Bumpass Hell. Otherwise there are other good trails in Lassen Volcanic National Park to hike."
Michael M
"Reminds me of Yellowstone! So beautiful! Love the hike in and the hike back is great! We decided to run the way back and what a fun and quick way to end the hike! The purple flowered hill is beautiful with sweet surprises underneath the flower grove."
C S
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
Bumpass Hell Trail is located within Lassen Volcanic National Park. Access is typically via the main park road (CA-89). The trailhead is well-marked. Be aware that the park road itself is seasonal and usually opens by June or July.
No, Lassen Volcanic National Park experiences significant snowfall and is not open year-round. The main park road, CA-89, is typically closed from November to May or June. Always check the NPS website for current road conditions and opening dates.
A personal vehicle is the most convenient way to explore Lassen Volcanic National Park and reach trailheads like Bumpass Hell. Public transportation options are very limited within the park.
Yes, there is an entrance fee for Lassen Volcanic National Park. Fees are typically per vehicle and valid for seven days. Check the official NPS website for the most current fee information.
If the main park road (CA-89) is closed due to snow, you generally cannot access Bumpass Hell Trail. The trail itself is also closed when snow-covered. Plan your visit for the summer or early fall months.
🎫 🎫 Tickets & Entry
You do not need a separate ticket for Bumpass Hell Trail itself, but you do need to pay the entrance fee for Lassen Volcanic National Park. This fee grants access to the park and all its trails, including Bumpass Hell when it's open.
Bumpass Hell Trail is open seasonally, typically from mid-July through October or early November, depending on snow conditions. It is not open 24/7; access is during daylight hours when the trail is open. Always check the park's official website for current status.
Bumpass Hell Trail usually opens for the season in mid-July, but this can vary depending on the amount of snowfall and how quickly the snow melts. Some years it might open in August.
The trail typically closes in late October or early November due to snow. However, early snow can cause it to close sooner. It's crucial to check the park's alerts for the most up-to-date information.
Currently, there is no reservation system required for Bumpass Hell Trail. However, Lassen Volcanic National Park may implement timed entry or other reservation systems during peak seasons or for specific areas in the future. It's best to check the park's official website for any updates.
🎫 🏞️ Onsite Experience
The Bumpass Hell Trail is considered moderately difficult. It's a 3-mile round trip with an elevation gain of about 439 feet. The trail is well-maintained with boardwalks in the geothermal areas.
Most visitors spend about 2 to 3 hours hiking the Bumpass Hell Trail, including time to stop and observe the geothermal features. This allows for a comfortable pace and ample photo opportunities.
Bumpass Hell features a variety of geothermal wonders, including bubbling mud pots, steaming fumaroles, and vividly colored boiling springs. The boardwalk allows you to safely walk through the heart of this active area.
Yes, the sulfur smell is quite noticeable and pervasive due to the active fumaroles and hot springs. Many visitors describe it as a 'mini Yellowstone' experience, and the smell is an integral part of the unique environment.
Yes, there are restrooms available at the Bumpass Hell trailhead. It's advisable to use them before starting your hike, as there are no facilities along the trail itself.
📸 📸 Photography
Early morning or late afternoon offer the best light for photography at Bumpass Hell, minimizing harsh shadows and capturing the steam rising from the geothermal features. Weekdays are also better for fewer crowds.
Expect to capture unique shots of bubbling mud pots, vibrant boiling springs, steaming vents, and the stark, colorful landscape. The contrast between the geothermal activity and the surrounding mountains is also photogenic.
Drones are generally prohibited in national parks, including Lassen Volcanic National Park, to protect wildlife and preserve the visitor experience. Always check the park's specific regulations regarding drone usage.
A wide-angle lens is great for capturing the expansive geothermal landscapes. A telephoto lens can be useful for isolating details of the springs and fumaroles. Consider a polarizing filter to reduce glare on water surfaces.
Yes, there are often beautiful purple wildflowers in the areas surrounding Bumpass Hell, especially in early summer. These can add a lovely splash of color to your photos, contrasting with the geothermal features.

Social
from TikTok, Instagram & Reddit