Its called a "caldera".
Caldera
Caldera
A mass rock is formed when a volcano's magma chamber empties and the overlying rock collapses into the empty chamber. This creates a steep-walled depression or caldera at the volcano's summit. It is a common feature of collapsed volcanoes.
The large circular depression at the top of a volcano that forms when the roof of the magma chamber collapses is called a caldera. Calderas can be huge in size and are formed during explosive volcanic eruptions or when the magma chamber empties and the summit collapses into the void left behind.
It falls down
caldera
When a volcano collapses into itself at its top, it forms a large crater called a caldera. Calderas are formed when the magma chamber of a volcano empties during an eruption, causing the summit to collapse inward.
yes, I think so. because, very large volume of magma is ejected and then magma chamber can't support the volcano above it. then the volcano begins to sink into the earth.magma chamber empties and a new collapsed depression occurs.
what happens is that it forms a caldera
No. They are simply called pyroclastic flows. A caldera is a depression formed in the ground when a volcano, usually a composite volcano, collapses as the magma chamber partially empties during an especially violent eruption.
A crater that becomes very large as a result of the collapse of its walls is called a caldera. Calderas are typically formed after a volcanic eruption when the magma chamber empties and the summit collapses into the void below.
A form of volcano that collapses in on itself is called a caldera. This occurs when a volcano erupts and empties its magma chamber, leading to a significant loss of structural support. As a result, the ground above the emptied chamber collapses, creating a large depression. Calderas can be quite vast and may eventually fill with water, forming lakes.