Ce film rend compte de la vie de mineurs sardes qui se battent pour leurs droits, face à la menace de perdre leur emploi. En explorant l’existence infernale d’ouvriers oubliés des médias autant que du grand public, la réalisatrice Valentina Pedicini parvient à capter une beauté atonale, troublante, à l’aide d’images minutieusement travaillées qui célèbrent la résilience d’êtres humains.

A long night without an end, without seasons, without time. A secular labor that is both pride and curse. Kilometers of tunnels. Darkness. Black men. A woman. Patrizia, the only female miner in Italy, enters in a dialogue with a dead father, a never buried memory. The last 150 miners are ready to fight a war against the "upper" world to prevent the already imminent closure of the mine. Dal Profondo, shooting 500 metres below sea level there is a voice from the depthes, is a prayer that is dedicated to the dead and demands to be heard by the living: "De profundis, clamavi ad te, O Domine....."