The volcano, the highest mountain in the Kamchatka peninsula – Russia’s Land of Fire and Ice – is active again after one year’s relative calm. ‘The crater is filling up with fresh lava and volcano’s activity is steadily growing. There is a constant volcanic trembling, thermal anomaly and glow above the crater’, said the Kamchatka branch of the Geophysical Service of the Russian Academy of Sciences.

There is a warning to aircraft flying at 6,000 metres altitude. Klyuchevskaya Sopka, also known as Klyuchevskoi – which rises some 4,750 meters above the sea level – is one of the planet’s most active volcanoes. Its last active phase was from August to December 2013. Increased seismic activity was noted from 19 December. A small plume was detected from 2 January. A thermal anomaly is visible on satellite data and during clear weather, glow can be seen from the summit at night. FULL REPORT