This is pure awesomeness as a volcano in Indonesia actually erupts with blue lava.  And there of course is a scientific explanation for this:

Tall, mountainous stratovolcanoes like Mount Fuji remain silent for many hundreds of years before unleashing their cataclysmic fury on the world. Volcanoes on Io, one of Jupiter’s innermost moons, produce spectacular eruption columnsthat reach heights of 500 kilometers (310 miles) that are literally out of this world.  In any case, the lava produced tends to be an orangey-red color. Incredibly, a volcanic complex in Indonesia that goes by the name of Kawah Ijen bucks this trend: When it erupts, its lava burns an iridescent blue.

Let’s watch a blue lava volcano in the video on page 2

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