Ijen Crater, Indonesia

Ijen Crater has a 1km-wide turquoise colored acid crater lake, the largest highly acidic crater lake in the world. The pH of the water in the crater is measured to be 0.5 due to sulfuric acid. The lake is the site of sulfur mining operation

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Keywords: acid acidic blue ceramic colored condensation crater deep east fire flame gas ijen indonesia java lake miners mining molten pipes pools sulfur sulfuric sulphuric turquoise volcanic volcano

Username: Albertlse

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Image ID: 65589585