The Earth's surface is shaking; long cracks split the ground open; lava rivers are rapidly flowing down the slopes; explosions sound more and more often; rocks and other debris are flying into the air; the sky is darkened by the clouds of ash. Nah, it's not a plot of a new disaster movie! It's just geologists who decided to drill into a super-volcano.  

Super-volcanoes get formed when gigantic volumes of scorching hot magma are trying to escape from deep underground. It rises close to the surface but can't break through the Earth's crust. The pressure keeps growing because more and more of it is trying to get to the surface. Until - bang! - a super-eruption occurs!  

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