Researchers from Institute of Volcanology and

KAMCHATKA, SOVIET UNION. Researchers from the Institute of Volcanology and Seismology, Far Eastern Branch of the Russian Academy of Sciences, during an expedition to the crater of Plosky Tolbachik Volcano. (TASS file image / Igor Vainshtein)

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Crater Kamchatka Researchers Seismology Tolbachik Vainshtein Volcano Volcanology

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