Lonquén (Mapudungun for "on the low lands") is a town in Chile, located between the communities of Talagante and Isla de Maipo, within the Metropolitan Region of Santiago.
In pre-Columbian times, Lonquén was occupied by the cultures Bato and Llolleo.
In 1928, the land was divided in three estates: Sorrento, Santa Teresa and the Recreation, in which the economy was based on agriculture.
On 15 October 1973, 15 men were arrested in the community of Isla de Maipo.
[2][3][4] February 19, 2010, the Health Science Center of the University of Texas Laboratory delivered the results of their four-year analysis, identifying thirteen of the fifteen victims.