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Popocatepetl volcano overlay (3D)

Located about 40 miles (65 km) southeast of Mexico City.The last major eruption of Popocatepetl (pronounced poh-poh-kah-TEH-peh-til) occurred in 800 A.D., in which vast amounts of lava and ash from the volcano completely filled many of the surrounding valleys. Since then, there have been at least five moderate eruptions, two of which occurred in the 1900s. Toward the end of 2000, scientists warned there were signs of activity within the volcano as pressure within a dome of lava at its base continued to build, which eventually led to the moderate eruption on December 18.