Tehran, Behesht-e Zahra Cemetery, Section 108
In the summer of 1988 Mina Hashemi, whose husband was executed in the 1980s and buried in Behesht-e Zahra Cemetery, recognized new trenches dug near her husband’s grave. Weeks later, she heard from a woman living in a kiosk nearby that one night a number of agents had dumped corpses into these trenches and covered them with soil.
This was reported as thousands of political prisoners in the detention centers of Tehran province (Evin and Gohardasht), which supports the hypothesis that the bodies buried were probably those of prisoners executed in the 1988 massacres.
To see the exact location of the mass grave, you need to zoom in.