On the slopes of an Indonesian volcano, rivers of light appear to pour out of the dark, glowing an electric blue that looks ...
Lava is supposed to be red—that’s volcanoes 101. But at Indonesia’s Kawah Ijen, the Earth decides to break the rules. Instead ...
Kawah Ijen is a giant, active volcano on the island of Java with a crater that contains the world's largest acidic lake. The water has a pH lower than 0.3 in parts of the lake where hydrothermal ...
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