Resago is a

cinder cone A cinder cone (or scoria cone) is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions o ...

in the

Linares Province Linares ( es, Provincia de Linares) is one of four provinces of the central Chilean region of Maule (VII). The provincial capital and most populous center is the city of Linares. Administration As a province, Cachapoal is a second-level adminis ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

. This cinder cone may have formed during historical times, and created a

basaltic andesite Basaltic andesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase. Basaltic andesite can be found in volcanoes around the world, including in Central Ameri ...

lava flow Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or und ...

that extended over of length to Laguna del Dial.

Sources

Cinder cones of Chile Holocene volcanoes {{Volcanology-stub