If you look at the volcano side ways that little curve on top is called a cradle i think
An opening in or near a volcano is called a volcanic vent, or just a vent.
The 'vent'.
A cinder cone volcano
a funnel shaped vent at the top of a volcano is a crater
Vent .
Mount Merapi
There isn't one.
A cinder cone volcano
An opening in or near a volcano, through which hot sulfurous gases emerge.
The vent
The name of the volcano erupting in Iceland is Eyjafjallajökull
The opening of a volcano is called the caldera.
The opening in the center of a volcano is a crater.
a funnel shaped vent at the top of a volcano is a crater
Vent .
it doesn't have a name, its just a volcano!!
Mount Merapi
Its called a volcanic cone
It is the volcano.