vent
that would be a volcano
that would be a volcano
You are asking about the mouth.
If you mean 'how does lava release itself from the volcano', it erupts through the volcano's crater. But if you mean 'how does lava erupt from the volcano', then sorry, I have no answers to that.
lava
Lava
The material that erupts from a volcano is called lava. It consists of molten rock that flows out during an eruption.
lava
The stuff that pours out of a volcano is called lava.
Lava
It is called Lava.
lava