28 a phenomenon called division of the procedural unity […]. The Public Prosecutor’s Office wishes to discover each and every perpetrator, but […] this is a task that sometimes goes beyond man’s function, due to multiple social or economic circumstances.” To be able to assess the reasonability of the duration of the proceeding, “the starting point must be the complexity of the fact, [as well as the] place, time, and way that it happened.” Other resources are also required, because access to Mapiripán is difficult. The witness is familiar with the special steps taken in this specific case to combat impunity; these are “selection of the Public Prosecutors […], the search for international resources to be able to conduct certain extremely technical tests, scientific in nature, in the river-bed […] and constant administrative –not judicialoversight by the Attorney General”. Given the number of massacres, the number of victims and of events such as that in the case of Mapiripán, where victims’ bodies are destroyed, the type of resources used by the Public Prosecutor’s Office are “DNA analyses and [collaboration by] the National Institute of Forensic Medicine and Science [Instituto Nacional de Medicina Legal y Ciencias Forenses][…].” However, “it is another matter to be able to collect the sign, the vestige, the indication that will enable the analysis.” On the other hand, Mr. Morales Marín stated that the Public Prosecutor’s Office had chosen the Mapiripán case as one of the cases to be investigated for human rights violations. b) Luz Mery Pinzón López, spouse of Jaime Riaño Colorado and sister of Enrique, Jorge, Luis Eduardo, and José Alberto Pinzón López In July 1997 she lived in the village of La Cristalina with her common-law spouse, her brothers Enrique, Jorge, Luis Eduardo, and José Alberto Pinzón López, with her daughter Esperanza Pinzón and with her mother. She worked in La Cristalina with Marco Tulio Bustos. After the massacre she left La Cristalina to seek refuge. She went by the Cooperative, where she saw arms and legs on the ground. She spent a night in Mapiripán before going to Villavicencio with her mother, her sister, her daughter, and her small children, because she was afraid that “they might also take [her] away[ and] make her disappear like they took [her] spouse [and] brothers away.” She and her brothers supported her mother. Her brothers also supported their sisters while they studied. After they disappeared “it was terrible […]; it was no longer the same, there was no longer any schooling, there was nothing, it all ended. [They] went hungry, unclothed, were […] destitute.” Jaime Riaño Colorado, her common-law spouse for seven years, was a very good man and they always had a good time. She was “terribly” affected by his disappearance, because she had no one to help her and her children. If he were alive, she and her children would be better off, lacking nothing. Her mother was severely affected by the facts and she died “from seeing that [her] brothers [and also her] spouse disappeared.” It was also terrible for her children to