A Russian volcano rumbled and spewed a towering ash column on Tuesday, as officials upped threat ratings to a maximum red level. A column of smoke and ash from the volcano Shiveluch in Russia's Pacific coast Kamchatka peninsula has reached an altitude of 10.3 kilometres and rock slides were likely in progress, officials at Russia's National Geophysical Service (RNES) told Interfax. The closest town at a distance of 45 kilometres was not in danger, Interfax reported.