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Volcano with blue lava.
One of the most visited natural phenomena in Indonesia is the Kava Ijen volcano. This is truly a miracle of nature! In truth, this beautiful place is pretty dangerous for humans. The volcano vaporizes harmful substances, so staying near it for a long time is dangerous to health. This phenomenon is nothing more than electric flashes of blue gas, which we see as blue lava. And so it turns out the mysterious blue liquid.