description Sulfur Bank Overview
Sulfur Bank is a geothermal area on the island of Hawaiʻi, located within Hawaiʻi Volcanoes National Park near the Kīlauea caldera. Hydrogen sulfide gas escapes from fissures in the volcanic rock, and upon contact with oxygen in the air, oxidizes to deposit bright yellow crystals of native sulfur on surrounding surfaces. The site was historically associated with sulfur mining activity in the nineteenth century. It is one of several visible geothermal features in the national park that illustrate Kīlauea's active volcanic system.
help Sulfur Bank FAQ
Where is the Sulfur Bank geothermal area located?
Sulfur Bank is located within Hawaiʻi Volcanoes National Park on the island of Hawaiʻi. It sits right near the rim of the Kīlauea caldera.
What causes the bright yellow crystals at the Sulfur Bank in Hawaii?
Hydrogen sulfide gas escapes from fissures in the volcanic rock. Upon contact with oxygen in the air, the gas oxidizes to deposit bright yellow sulfur crystals.
Is it safe for tourists to visit the Sulfur Bank area?
Yes, visitors can view the area via a paved boardwalk. However, pregnant women and individuals with respiratory problems are warned to avoid the area due to the sulfur dioxide fumes.
What is the traditional Hawaiian name for the Sulfur Bank?
The site is historically referred to as Ha'akulamanu. This traditional name translates roughly to a gathering place for birds due to the native birds seen near the vents.
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