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Title: POISONOUS GAS FROM DORMANT VOLCANO
Caption: (c) Gas being released from the bottom waters of Lake Nyos with a degassing fountain in 2001. (Nyos degassing system conceived, designed and manufactured by a French company, Data Environment and the University of Savoie, France. Courtesy of J. C. Sabroux)
Keywords: volcanoes, volcanism, volcanic eruptions, poisonous gases, atmosphere