A volcano erupted early Tuesday on Russia's far eastern Kamchatka Peninsula. The eruption of Shiveluch, one of the area's most active volcanoes, sent clouds of dust more than 65,000 feet into the sky, engulfing villages in gray dust. The ash cloud extended over more than 300 miles and the event triggered an aviation warning. Officials closed the skies over the area to aircraft and local authorities advised residents to stay indoors, with schools shuttered and power supplies cut for two villages for a few hours.