Popocatépetl, a volcano in Mexico, about 40 miles (64 km) southeast of Mexico City. Rising 17,887 feet (5,452 m) above sea level, it is the highest mountain in the nation after Orizaba. Popocatépetl is generally cone-shaped and has a snowcapped crest. Its crater is roughly half a mile (800 m) across and more than 500 feet (150 m) deep. The volcano erupted in 2000; the previous eruption occured in 1702. Popocatépetl is an Aztec word meaning “smoking mountain.”

A short distance north of Popocatépetl is another inactive volcano, Iztaccíhuatl. Both lie in Izta-Popo National Park, featuring volcanic landscapes and distinctive plant and animal life. Popocatépetl is relatively easy to climb, and its summit is reached by many mountain climbing groups. It has huge sulfur deposits.