sentences:  As of October 2009 the group had identified the remains of 1,700 victims.One of these mass graves outside of Burgos was the subject of a photo-documentary entitled "Dark is the Room Where We Sleep" at the International Center Of Photography in New York, New York.The previous Spanish government under Mariano Rajoy (2011-2018) refused to open the historical archives that would allow experts and historians to throw light on the fate of victims of the Francoist State.