Watch Cineb. Discovered in 1990, the clandestine grave at the Dom Bosco cemetery in Perus is a symbol of the violence and repression of the 1964 military dictatorship, whose echoes still resonate today in the state's police approach. In this documentary, we present how the work of analyzing the more than 1,049 bones found in the mass grave was carried out, and the difficulties encountered throughout this process.