Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock.
Mountain A Volcanic Mountain". Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. This material falls back to earth around the vent, and piles up around it.

Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape.
Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape. A volcanic mountain starts out as a simple crack in the earth called a volcanic vent. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. This material falls back to earth around the vent, and piles up around it.
Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. A volcanic mountain starts out as a simple crack in the earth called a volcanic vent. Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape.
A volcanic mountain starts out as a simple crack in the earth called a volcanic vent.
This material falls back to earth around the vent, and piles up around it. Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. A volcanic mountain starts out as a simple crack in the earth called a volcanic vent.
Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock.
This material falls back to earth around the vent, and piles up around it. Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. A volcanic mountain starts out as a simple crack in the earth called a volcanic vent.
A volcanic mountain starts out as a simple crack in the earth called a volcanic vent.
Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape. Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape. A volcanic mountain starts out as a simple crack in the earth called a volcanic vent. This material falls back to earth around the vent, and piles up around it.
Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. Magma erupts out of the ground as lava flows, clouds of ash, and explosions of rock. A volcanic mountain starts out as a simple crack in the earth called a volcanic vent. Over time (and sometimes quite quickly) a volcanic mountain builds up, with the familiar cone shape.