The Klyuchevskoy volcano, erupting in Kamchatka, ejected a column of ash to a height of up to 6.5 km above sea level on Thursday morning, the Kamchatka Volcanic Eruption Response Team (KVERT) of the Institute of Volcanology and Seismology (IVS) of the Far Eastern Branch of the Russian Academy of Sciences reports. "Video footage provided by KVERT shows the ash plume extending 5 km southwest of the volcano," the statement said.KVERT has assigned an orange colour code for aviation hazards to this volcano. A small amount of ash is not ruled out there.Klyuchevskoy is an active volcano in the east of Kamchatka, its height is 4.85 thousand meters. It is located 360 km from Petropavlovsk-Kamchatsky, on its slope 30 km from the summit is the village of Klyuchi. Klyuchevskoy is one of the most active volcanoes in the world.