Laguna del Maule (volcano) about fourteen shield volcanoes and stratovolcanoes that have been degraded by glaciation. The Laguna del Maule volcanic field covers a surface area of and contains cones, lava domes, lava flows, and shield volcanoes. There are 130 volcanic vents at Laguna del Maule. The lake is surrounded by 36 silicic coulees and lava domes. Over of the field is covered by these rocks, and volcanic ash and pumice produced by the eruptions has been found in Argentina. Presently some summits around Laguna del Maule reach altitudes of . The volcanic field lies at an average height of . Among the various
Laguna del Negro Francisco Laguna del Negro Francisco Laguna del Negro Francisco is a lake in the Atacama Region Chile and the southernmost closed lake in the country. It is situated northeast of the city of Copiapó. The lake is about long and wide with a surface area of about and a depth of about . A peninsula probably formed by a moraine and subsequently modified by wind-driven accumulation of sand separates the lake into a north-northwesterly and a south-southeasterly half with different colour and water composition. The lake is of tectonic origin and lies within a basin bordered by mountain ranges to the