What would happen if you filled a Volcano with water?

One of the established theories about the 1883 eruption of Krakatoa is that exactly this happened by natural accident; either the volcano's lowest vents became submerged, or faulting permitted an influx of water. read more

You might want to think about that before you go pouring water down a volcanic vent. Steam is vicious stuff. The heat content of lava (or magma) is enormous; it'd take a *lot* of water to quell it at its source, even temporarily. read more

If you poored water into an active volcano with lava flowing. Something like this video would most likely occure. This happens Because the water vaporizes rapidly, and steam has a much greater volume than water. Therfore it seems to explode, but the gas expansion just throws the surrounding material in all directions. read more

Well, nothing good. The volcanic debris – ash, lava and bombs – would fly up into the extremely low pressure eye. Although warm air rises up through the core of hurricanes, the air there is still relatively cool, at least compared to fresh volcanic debris. read more