The Shiveluchi volcano, one of the most active volcanoes on the Kamchatka Peninsula in Russia's Far East, spewed an ash plume that reached an altitude of about 10 kilometers on Monday, prompting authorities to issue a maximum aviation warning, EFE reported. According to the Kamchatka branch of the Geophysical Service of the Russian Academy of Sciences, quoted by TASS, the ash plume rose to 10,000 meters above sea level, surpassing the eruptive episode four days earlier, when the volcanic plume