One of Russia's most active volcanoes erupted on the far eastern Kamchatka peninsula on Tuesday, shooting a vast cloud of ash far into the sky that smothered villages in drifts of grey volcanic dust and triggered an aviation warning.
The Shiveluch volcano erupted just after midnight and reached a crescendo about six hours later, spewing out an ash cloud over an area of 108,000 square kilometers (41,700 square miles), according to the Kamchatka Branch of the Russian Academy of Sciences' Geophysical Survey.
