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WATCH: Tallest volcano in Eurasia ERUPTS in Russia's Far East, spewing ash 7,000m into the skies

The eruption of the Klyuchevskaya Sopka volcano in Russia's Kamchatka has created spectacular scenes, producing rivers of lava and massive smoke clouds – but scientists worry that the resulting ash cloud could disrupt air traffic.

The latest activity within the steep symmetrical cone of the volcano – the highest in Eurasia – blew ash some 7,000 meters into the air on Monday, the Emergencies Ministry said.

Klyuchevskaya Sopka, at 4,649 meters in height, was effectively inactive for three years before it started spewing lava again last October – and the smoldering eruption has continued to some degree ever since.

The Kamchatka Peninsula is a remote, yet picturesque, area in Russia's Far East, and there are no cities or towns within close proximity of the clouds of ash pumping out of the volcano.

However, researchers at Russia's Academy of Sciences (RAS) are still closely monitoring the eruption, as it could potentially cause significant air traffic disruptions. Civilian flights might be grounded due to Covid-19, but the most essential cargo is still being delivered by plane.

“Ash trails from the volcano can stretch thousands of kilometers and cross aviation routes,” so being able to predict where the cloud goes is “extremely important,” Aleksey Ozerov, the head of the Institute of Volcanology and Seismology at the Far Eastern Branch of RAS, told RT's Ruptly video agency.

Also on rt.com WATCH one of the world’s most active volcanos spew LAVA in Russia’s Far East

The eruption at the Klyuchevskaya Sopka has so far been designated a level ‘orange’ – penultimate on the scale – threat with regards to the danger it poses to aviation.

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