What causes a volcano to erupt?
Mountain's Long Breath
What causes a volcano to erupt?
A volcano looks like an ordinary mountain — until the day it decides to clear its throat. So what's actually going on under all that rock? Spoiler: it's the planet's own kitchen, and the burner has been left on for a very long time.
Start way down. Deep below the ground, it's hot enough to melt rock. This melted rock has a name: magma. It's basically rock that got so warm it went gooey, like a candle bar slumping near a flame.
