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La Palma volcano: New lava channel opens as secondary cone collapses

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Figure caption,

The eruption continues - watch the latest footage from the volcano here

A new lava channel has opened in La Palma's volcano, according to an expert.

It is thought to be because a secondary cone inside Cumbre Vieja started collapsing on the Spanish island.

It has now been erupting for five weeks and more than 7,000 people have had to evacuate their homes and be moved to safety.

Constant seismic activity is causing lots of small earthquakes, plumes of ash are being sent into the sky and the lava flow is showing no sign of stopping.

A diagram of a volcanoImage source, BBC Bitesize

Volcano Glossary:

Volcano - An opening in the Earth's crust. It allows hot magma, ash and gases to escape from below the surface.

Magma chamber - large underground pool of magma

Lava - magma, once it reaches the surface

Crater - bowl-shaped basin in the top of the volcano

Vent - central tube which magma travels through

Secondary cones - eruptions from other vents may build up secondary cones on the flanks

Ash, steam and gas - material thrown out by the volcano

Volcanic bombs - larger material thrown out by the force of eruption

From BBC Bitesize

Volcanologist Itahiza Dominguez said: "During the night [Monday], part of the secondary cone collapsed and generated a channel through which lava is continuously flowing out.

"We are now seeing moments of activity similar to those we had at the beginning of the eruption, with drastic increases in the emission of material, and we will have to see how it evolves, if this is something momentary or if the volcanic activity remains like this.

"There is nothing that tells us that it could end, there is no data to indicate that volcanic activity is decreasing. So, it is still too early to know it." He added.

Figure caption,

The Big Question: Why do volcanoes actually erupt?

Lava from the volcano has covered huge areas of land on La Palma and destroyed 2,000 buildings, including homes, businesses and schools.

Many banana plantations have also been destroyed since the eruption started on 19 September.

Nobody has been seriously hurt or injured by the eruption.

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