The Andean Volcanic Belt is a major volcanic region located along the western edge of the Andes Mountains in South America. It stretches from northern Chile through Peru, Ecuador, and into Colombia. This belt is formed by the subduction of the Nazca Plate beneath the South American Plate, leading to significant volcanic activity. The region is home to many active and dormant volcanoes, including notable peaks like Cotopaxi and Ojos del Salado. The volcanic activity contributes to the rich biodiversity and varied ecosystems found in the area, making it an important geological and ecological zone.