HotPrimitive

Terminal Geyser

CA205°F

About Terminal Geyser

Terminal Geyser bubbles vigorously within Lassen Volcanic National Park, emitting steam from a natural vent that showcases the park’s volcanic energy. This hot spring’s intense heat and rugged surroundings offer a raw, elemental experience of California’s geothermal forces.

Getting There

You reach Terminal Geyser by a moderate 15-minute hike from the limited parking area near the designated trailhead. The path winds through volcanic terrain, giving you a sense of anticipation as you approach this active, natural marvel.

What to Expect

The water at Terminal Geyser is exceptionally hot, reaching around 205°F, so direct swimming is unsafe here. Instead, you soak in the atmosphere of steamy vents and bubbling pools while enjoying the quiet solitude, as few visitors make the trek. Facilities are non-existent, maintaining the pristine, primitive feel.

Tips for Visitors

Wear sturdy shoes for the volcanic trail and bring plenty of water, as the hike and geothermal heat can be draining. Because parking is limited and the area remains quiet, visiting during off-peak hours helps ensure a peaceful experience. Check park regulations beforehand, as fees or restrictions may apply in Lassen Volcanic National Park.

Last updated December 20, 2025
Terminal Geyser

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Access

Moderate Hike

15 min from parking

Parking

Limited

Fee

Unknown

Cell Service

Unknown

Crowds

Quiet

Best Season

Year Round

Nearby Springs

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