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 Maule (volcano) total rock output of over . At least three caldera forming events occurred during the system's lifespan, at 1.5 mya (dacitic Laguna Sin Puerto ignimbrite, the ignimbrite is exposed northwest of Laguna del Maule lake), 950,000 (rhyodacitic Bobadilla caldera, the ignimbrite from this caldera-forming event borders Laguna del Maule lake in the north) and 336,000 years ago generating welded ignimbrites. This last ignimbrite is known as Cordon Constanza ignimbrite. The Bobadilla caldera is centred beneath the northern shore of the Laguna del Maule, and has dimensions of . In total, volcanic output at Laguna del Maule has been estimated to