Bumpass Hell             Lassen Peak & Brewer's mountain-heather               Mountain Hemlock

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Hike List
Hydrothermal Areas

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We hike the trails of Lassen National Park and Caribou Wilderness.  Our maps are free to you, the hiker.


Sacramento Valley
Hiking Conference


Bumpass Hell in-and-back

season:  mid July-Oct (snow Nov-mid July)

length:  3.0 miles

elevation gain:  500'

elevation range:  8150-8400'

rules: Lassen National Park

trailhead map

hike map


current weather forecast

One of the best known hydrothermal area in the United States outside of Yellowstone. 

The trail is easy, but the elevation may leave you short of breath. 

The mountain scenery is excellent, and there are fine old Mountain Hemlocks along the way.

Bumpass Hell stinks, and bubbles, and steams, and is very cool.  Probably not a good place to be if the Lassen volcano re-activates, but until then it makes for an excellent hike.