Kawah Ijen in Indonesia produces a striking blue-purple glow after dark. The unusual color results from sulfuric gases that ignite while escaping through fissures, forming blue flames around the crater.
4mo
Kawah Ijen in Indonesia produces a striking blue-purple glow after dark. The unusual color results from sulfuric gases that ignite while escaping through fissures, forming blue flames around the crater.
4mo
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