The Etna Volcano erupts from the south-east crater, spewing lava and ash on December 22, 2018 in Catania, Italy. (Photos: VCG)

The Etna Volcano erupts from the south-east crater, spewing lava and ash on December 22, 2018 in Catania, Italy.

The Etna Volcano erupts from the south-east crater, spewing lava and ash on December 22, 2018 in Catania, Italy.

The Etna Volcano erupts from the south-east crater, spewing lava and ash on December 22, 2018 in Catania, Italy.

The Etna Volcano erupts from the south-east crater, spewing lava and ash on December 22, 2018 in Catania, Italy.