Tetlalmanche Volcano, Extinct volcano in Iztapalapa and Tláhuac, Mexico City, Mexico

Tetlalmatzin, known as Guadalupe Volcano or El Elefante, is an extinct volcano in Mexico City's Sierra de Santa Catarina, on the border of Iztapalapa and Tláhuac. Its summit, at 2,750 m, is the highest point of both boroughs. The southern slope, almost unpopulated, is a protected natural area.

Tetlalmatzin is an extinct volcano of the Sierra de Santa Catarina, a chain of six small volcanoes in eastern Mexico City. The sierra was declared an ecological conservation area in the 1990s, protecting the slopes that recharge the capital's aquifers. In the 1920s the painter Dr. Atl proposed turning the range into a cultural development centre for the Federal District.

The volcano's official name is Tetlalmatzin, though it is also called Cerro del Borrego, Cerro de Santa Catarina and El Elefante. In the 1920s the painter Dr. Atl proposed turning the Sierra de Santa Catarina into a cultural development centre for the Federal District.

Hikers should bring sturdy boots and plenty of water since temperatures shift dramatically with elevation. Weather conditions vary by season and time of day, so prepare layered clothing.

In the 1920s the painter and volcanologist Dr. Atl proposed turning the Sierra de Santa Catarina into a cultural development centre for the Federal District. The plan was never carried out, and the range instead became an ecological conservation area in the 1990s.