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With its fiery river spewing out across a dark, volcanic wasteland, this picture could be straight from the film series The Lord of the Rings.But rather than a scene depicting the evil land of Mordor, this incredible picture has captured a volcanic eruption so powerful it spewed a lava fountain a kilometre high.Bearing an uncanny resemblance to the mythical land imagined from the books by J.R.R. Tolkien, this volcano has been erupting in Kamchatka, far eastern Russia.
Geologists assume that the cause of volcanic thunderstorms is similar to the cause of lightning in thunderstorms. Why some produce effect and some do not? Maybe its to the plasma from the planet. The planet is a spinning plasma ball and the magma is plasma containg charges that are moving.The simple answer could be that all volcanoes are electric but that the lightning displays happen only when the resistance to the volcanic current is high.http://en.wikipedia.org/wiki/Dirty_thunderstorm