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Hawaii Volcanoes National Park

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Steam Vents
Steam Vents - Hawaii Volcanoes National Park

Steam Vents - Hawaii Volcanoes National Park

Photos by John Fischer

Driving counterclockwise on Crater Rim Drive from the Visitors Center your first stop should be the Steam Vents. Here rainwater sinks through the ground and is warmed by rocks which carry heat from the lava below. Hot water then rises through fissures to condense in the chilled air.

The steam also contains sulfur dioxide and hydrogen sulfide. Prolonged exposure can be dangerous.

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