that would be a volcano
vent
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 that erupts underwater and takes the form of round lumps is called pillow lava
It is something that erupts lava
Lava.
lava
lava
Lava
Magma is called lava once it erupts above ground. Lava is molten rock that flows from a volcano during an eruption.
It is molten magma that erupts from volcanoes - commonly known as lava.