The "sacas" of Paracuellos (mass killings) Historical milestone · Paracuellos de Jarama, Cuenca del Medio Jarama, Madrid Image of Paracuellos de Jarama, not of the place itself. During the siege of Madrid, in 1936, prisoners evacuated from the capital's jails were shot in the ravines of the municipality. Of the thirty-three recorded transfers, twenty-three ended in massacres; the number of victims is still a matter of debate. 7 de noviembre - 4 de diciembre de 1936 Photo: Mario modesto (CC BY-SA 3.0) What to see and do in Paracuellos de Jarama