Laguna del Desierto incident violence in order to obtain control of the zone and political preponderance of the force. American historian William Sater states: Laguna del Desierto incident The Laguna del Desierto incident, in Argentina called also Battle of Laguna del Desierto, occurred between four Chilean Carabineros and between 40 and 90 members of the Argentine Gendarmerie and took place in zone south of O'Higgins/San Martín Lake on 6 November 1965, resulting in one lieutenant killed and a sergeant injured, both members of Carabineros, creating a tense atmosphere between Chile and Argentina. The British award of 1903 considered the demands of Chile and Argentina
Laguna del Maule (volcano) northwest of Laguna del Maule, a neighbouring rhyodacite west of Laguna del Maule dam, basaltic () 63,000–62,000 years ago near the outlet of Laguna del Maule, a rhyolite east of the outlet 38,000 ± 29,000 years ago, and andesites also west of the dam 27,000–26,000 years ago named . Silicic volcanic units erupted after 25,000 include young andesites on the western coast of Laguna del Maule 24,000 years ago, rhyodacitic 21,000 years ago southeast of Laguna del Maule and rhyolitic () 19,000 years ago in the northern part of the field, the latter of which dammed the Maule River and