What happens when a larger volcano falls in on itself?

When a larger volcano collapses in on itself, it typically forms a caldera, which is a large depression resulting from the explosive eruption and the subsequent emptying of the magma chamber beneath the volcano. The weight of the volcanic structure causes the ground to sink, creating a basin that can fill with water to form lakes. This collapse can also trigger secondary volcanic activity, including the formation of new vents or smaller cones within the caldera. Such events can significantly alter the landscape and affect local ecosystems.