One of the most tragic volcanic events of the 20th century occurred in Colombia in 1985, when an eruption of Nevado del Ruiz generated lahars that swept down river valleys and destroyed communities in its path. With little warning, the volcano began erupting on the afternoon of November 13, 1985. Ash and muddy rain began to fall. Communities were alerted but no formal decision was made to evacuate. Later that evening, a stronger eruption produced pyroclastic flows and surges that mixed with snow
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Mount St. Helens erupted #onthisday in 1980. Hear the harrowing stories of the people who were there in Make It Out Alive: https://bitly.com/3dryeH0 | Smithsonian Channel Aviation Nation
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Pakistan TV on Instagram: "A man trapped by a powerful lahar on Mount Semeru in Indonesia highlights the danger of volcanic mudflows. #mountsemeru #indonesia #volcano #lahar #disasternews #emergencyalert #pakistantv #pakistantvglobal"
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LoudFolk on Instagram: "Lahar flowed down the slopes of Mount Semeru in East Java, Indonesia, this afternoon. A fast-moving lahar from Mount Semeru - formed from volcanic debris mixed with water - swept down the volcano’s slopes, moving like a powerful volcanic mudflow"
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