Structure of a volcano

Have been inactive or asleep for a long time. These volcanoes are less predictable and, therefore, more dangerous.

Have stopped erupting altogether.

Erupt regularly.

Have stopped erupting altogether.

Have been inactive or asleep for a long time.

Erupt regularly

Have been inactive or asleep for a long time.

Have stopped erupting altogether

Erupt regularly

•Lava flow

•Ash cloud

•Magma chamber

•Secondary cone

•Volcanic bombs

•Lava flow

•Main vent

•Magma chamber

•Main vent

•Magma chamber

•Crater

•Volcanic bombs

•Crater

•Main vent

•Volcanic bombs

•Secondary cone

•Lava flow

•Main vent

•Crater

•Volcanic bombs

•Magma chamber

•Ash cloud

•Main vent

•Volcanic bombs

•Volcanic bombs

•Secondary cone

•Magma chamber

•Main vent