Located in the municipality of Izalco, in the state of Sonsonate, at an altitude of 1965 masl. The diameter of the crater is 250 meters. It forms part of the National Park of Volcanoes, its volcanos brothers are the Ilamatepec (Santa Ana) and San Marcelino.

The municipal report of Asunción Izalco of December of 1859, fixes in 1772 the birth of the Izalco volcano, “Faro del Pacífico”, “Faro de El Salvador” and “Lighthouse of Central America”, a cause Of its remarkable and frequent eruptions of incandescent magma.

Professor Jorge Lardé, the best biographer of the Izalco volcano, documents the birth of this plutonic colossus by 1606, even though at first it was a volcano without a cone and of insignificant importance. The undoubted eruptions of 1722, 1745, 1753, 1762, 1765, 1770 and 1798, complete their physiognomy, endowing the Izalco with a lava cone of its own and distinct from the cone of the Ilamatepec (Santa Ana volcano) .