Four dogs that were trapped by lava flows on the Spanish island of La Palma have not been spotted in rescue attempts with cargo drones.

The director of the company coordinating the evacuation attempt does not dare to say whether the dogs are hiding or whether the animals have been swallowed by the lava.

"The drones have speakers that the dogs would normally come up to. They would also have to associate the drones with food, otherwise they would be fed," says Javier Pereira.

"But they don't come to us. We are investigating how that is possible and trying to find the animals."

If the dogs come back into the sights of rescuers, the animals can in principle be rescued immediately using cargo drones.

According to Pereira, the emergency teams are ready and the animals can already be spotted from a height of 300 meters with cameras that the drones have.

The dogs were cornered by the volcanic eruption on La Palma.

Two aid organizations gave the dogs food and drink for several days, via drones.

It is not possible for the local authorities to rescue the dogs, because when helicopters are deployed, for example, ash and other volcanic material can be blown up.

Authorities do need to authorize the eventual evacuation attempt if the dogs come into view again.

Nearly 2,000 homes destroyed by lava

The Cumbre Vieja eruption began on September 19, and experts said earlier this week that it is far from an end.

The previous eruption on La Palma, in 1971, lasted a month.

The longest-lasting volcanic eruption in the Canary Islands took place in the eighteenth century: the island of Lanzarote was affected by the lava flows for no less than six years.

The current lava flows have already destroyed almost two thousand homes on La Palma and 742 hectares of land are buried under the lava.

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