volcanoes Tools A B magma which reaches the surface lava a volcano in sicily etna opening at the top of a volcano crater store of molten rock deep inside the earth magma chamber lumps of molten rock thrown out of the volcano volcanic bombs volcanoes that have recently erupted active volcanoes volcanoes that have erupted in the last 2000years. dormant volcanoes steep sided volcano ash volcano volcano with gently sloping sides shield volcano volcano that erupted violently in 1883 krakatoa