A volcano previously classified as "extinct" in Russia's far east has woken up, and experts are now warning it could produce an eruption similar to the one that wiped out Pompeii and Herculaneum almost 2,000 years ago.
The Bolshaya Udina volcano is a stratovolcano located at the center of the Klyuchevskaya volcano group on Russia's Kamchatka Peninsula. It stands at around 10,000 feet in height and, until 2017 it was considered extinct, meaning it has not erupted in a long time and is unlikely to ever erupt again.
It is not known when Udina last erupted. However, scientists recently noticed continuing seismic activity beneath the mountain, potentially suggesting the "awakening" of the volcano complex, scientists wrote in the
Journal of Volcanology and Geothermal Research.
As a result, a team of researchers from Russia, Saudi Arabia and Egypt carried out a detailed investigation on the volcano. They installed four seismic stations and monitored the complex for two months, over May and June last year.