The Apaneca-Ilamatepec Biosphere Reserve contains both the oldest volcano in the Central Volcanic Chain, Caldera de Coatepeque as well as a more recent formation, Izalco, a stratovolcano. The reserve hosts important ecosystems for conservation of species and has highly diverse habitats.
The Central America Volcanic Arc is a chain of volcanic formations that extend from Guatemala to Northern Panama, parallel to the Pacific coastline of the Central American Isthmus. They range from major stratovolcanoes to lava domes and cinder cones.
El Salvador has five archaeological parks plus a Mesoamerican site that is not open to the public. The Yucatán Peninsula and the Petén Basin/Maya Forest region of Belize, Guatemala and Mexico have become synonymous with Maya ruins however, there are several sites in El Salvador of importance.
The Gulf of Fonseca, a sheltered inlet of the Pacific Ocean, is a gulf in Central America that is bounded in the northwest by El Salvador, the northeast by Honduras and the southeast by Nicaragua. Notable among the islands in the gulf are Zacate Grande, El Tigre and Meanguera.
Joya de Cerén is an archaeological site located in the Department of La Libertad, El Salvador. The site contains the remains of a pre-Hispanic farming village that was covered by a volcanic eruption in the seventh century AD. It is often referred to as the "Pompeii of the Americas."
Mesoamerica, which literally means "middle America" in Greek, is a historical and cultural region in Central America. It extends from approximately central Mexico through Belize, Guatemala, El Salvador, Honduras, Nicaragua and northern Costa Rica.
The Sierra Madre is a mountain system that is part of the American Cordillera, a chain of mountain ranges that consists of an almost continuous sequence of ranges that form the western backbone of North America, Central America, South America and West Antarctica.
The Trifinio Fraternidad Biosphere Reserve is a trinational biosphere reserve located between El Salvador, Guatemala and Honduras. It is the first transboundary biosphere reserve in Central America and represents a major contribution to implementation of the Mesoamerican Corridor.