Bumpass Hell Trail

The Bumpass Hell Trail is approximately 3 miles (4.8 km) round trip and generally takes about 1.5 to 3 hours to complete, depending on your pace and how much time you spend exploring the geothermal area. The komoot tour data suggests a duration of around 1 hour and 17 minutes, but this can vary.

The trail starts with a mostly flat path of compacted dirt, winding along a mountainside where you can see glacial polish. About a mile in, it descends steeply into the Bumpass Hell basin. Within the geothermal area, you'll walk on well-maintained boardwalks. The return hike involves ascending the steep section back out of the basin.

The primary attraction is the Bumpass Hell geothermal area itself, with its steaming vents, bubbling pools, and mud pots. Along the way, you'll pass the Bumpass Hell Trailhead, enjoy views from the Brokeoff Volcano Vista and Basin Overlook, and walk on the Bumpass Hell Boardwalk. Keep an eye out for the 'Big Boiler,' one of the park's hottest fumaroles.

Due to its high elevation, the trail typically opens in mid-July once the snow has melted. The best time to visit is generally from mid-July through early fall. Snow can linger well into early summer, and micro-spikes might be necessary if hiking earlier in the season.

The Bumpass Hell Trail is generally considered an easy to moderate hike and is often suitable for families with young children. While the initial sections are relatively flat, there is a significant 210-foot (64-meter) steep descent into and ascent out of the thermal basin, which adds to the moderate difficulty. The high elevation (around 8,000 feet or 2,485 meters) can also be a factor for some.

The most popular trailhead is the Bumpass Hell Trailhead. Parking is available at the trailhead, but it can fill up quickly, especially during peak season. Arriving early in the morning is recommended to secure a spot.

Yes, safety is crucial. Always stay on the designated boardwalks within the geothermal area, as the ground can be brittle and hide scalding acidic water or mud. The area also has a strong sulfur odor. Be prepared for high-altitude conditions and potential snow, even in early summer. Informative plaques along the route provide additional safety information.

No, dogs are generally not allowed on the Bumpass Hell Trail or on most trails within Lassen Volcanic National Park. Pets are typically restricted to paved roads, parking areas, and campgrounds.

Yes, there is an entrance fee to access Lassen Volcanic National Park. This fee covers entry for a certain period, usually 7 days. You do not need a separate permit specifically for hiking the Bumpass Hell Trail once you have paid the park entrance fee.

Given the trail's high elevation and potential for lingering snow, even in summer, wear sturdy hiking shoes. Layers are advisable as weather can change quickly. Bring plenty of water, snacks, sun protection (hat, sunscreen), and a map. If hiking early in the season, consider bringing micro-spikes for traction on snowy patches.

The Bumpass Hell geothermal area is the largest in Lassen Volcanic National Park, often called 'Little Yellowstone' due to its active volcanic features. It's unique for its striking colors from sulfur and minerals, ranging from orange and red rocks to bright blue and emerald green waters. You'll experience loud noises from features like the 'Big Boiler' and the distinctive rotten-egg smell of sulfur, all within an 'otherworldly' landscape.