About Bumpass Hell
Bumpass Hell is a striking hydrothermal area in Lassen Volcanic National Park, known as California's largest concentration of boiling springs, steaming fumaroles, and bubbling mud pots. The intense geothermal activity creates a surreal landscape marked by vivid mineral deposits and the sharp scent of sulfur, offering a raw and powerful glimpse into the earth’s inner workings.
Getting There
Reaching Bumpass Hell requires a moderate 3-mile round-trip hike along a well-maintained trail that usually takes 30 minutes each way. Parking near the trailhead is limited, so plan to arrive early to secure a spot. The path is open mainly during summer and fall, when snow-free conditions make the geothermal area safely accessible.
What to Expect
At Bumpass Hell, water temperatures can reach up to a scorching 199°F, so swimming is off-limits and potentially dangerous. The area is popular, often drawing steady crowds, but the boardwalks keep visitors safely distanced from geothermal hazards. The distinctive sulfur smell hangs heavy in the air, intensifying the otherworldly experience. No facilities are available, emphasizing the primitive nature of this unique hot spring environment.
Tips for Visitors
Wear sturdy shoes for the uneven terrain and bring plenty of water for the hike. Visit during summer for the most reliable access and fewer rainy interruptions. Since swimming is prohibited, focus on photography and exploration rather than soaking. Keep in mind limited parking and respect posted safety warnings around boiling water features.
