Fodor's Expert Review Inside a Volcano
Lassen Volcanic National Park
Tour–Sight
Visit the otherworldly Sulphur Works with a ranger and learn the secrets behind this unique hydrothermal feature.
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Visit the otherworldly Sulphur Works with a ranger and learn the secrets behind this unique hydrothermal feature.
Sulphur Works sidewalk
Lassen Volcanic National Park,
California
96063,
USA
530-595–4480