After the massacre, the SS used dynamite to collapse the vaults of the cavern where, kneeling and with their hands tied behind their backs, the 335 victims were slaughtered. Then, to confuse the smell emanating from the decomposing bodies, they dumped rubbish trucks in front of the entrance. It was only after the Liberation, at the end of July, that pathologist Attilio Ascarelli, professor of Forensic Medicine at the University of Rome, started the job of exhuming the bodies. It was discovered then that the victims were 335, and not 320, as was written in the German command statement. Prof. Ascarelli's job was long and complex, as months had passed since the massacre, but he was able to reconstruct how the massacre happened, which he then described in the report, drafted together with collaborators.