Riddle:
I make ash, but I’m not a bonfire.
I can expel rocks, but I’m not a slingshot.
I can be a mountain, but I’m not in the Himalayas.
I have a crater, but I’m not the Moon.
I erupt, but I don't have a bad temper.
What am I?
Show Hint
Hint:
It can be quite terrifying and cause a lot of damage.