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".

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".

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".

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".

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".

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".