Documentary film about the "zanja de Alsina", a long trench dug in the Argentinian Pampa in 1876 as way to separate the "civilized" from the "barbarians" during the massacre of indigenous peoples known as "campaña del desierto".

Cast:Osvaldo Bayer, Marcelo Valko, Juan José Estévez, Gastón Partarrieu, Eduardo Hiriart, Alberto Orga,

Genre:Documentary, History,

country:Argentina,

Production:Pentafilms Cine,