Al-Jazeera obtained private photos showing the place where the Syrian regime forces committed the mass massacre in the Al-Tadamon neighborhood, south of the capital, Damascus, in 2013.

These clips show the blurring of the features of the place, as the street in which the massacre was committed was paved after filling the hole.

The photos - obtained by Al Jazeera - bring back to the fore the facts of the liquidation process documented by the killer himself, the officer in the region branch of the Syrian Military Intelligence, Amjad Youssef and his soldiers.

In an investigation in which the British newspaper "The Guardian" revealed these facts, the officer appears to delude his blindfolded victims that a sniper is monitoring the street, so they must run to avoid the sniper's bullets.

While the officer laughs, he ends his trick of the victims by killing them while they fall into the pit or when they fall into it by firing squad.

The officer repeats this action with 41 people, some of whom may have been his neighbours, according to the newspaper’s investigation, which said that most of them were young or middle-aged, women, children and the elderly were shot dead, with the exception of an elderly man who was slaughtered by the officer, according to the investigation.

And in 25 minutes, they end the execution party by burning the bodies of civilian victims with car tires, in videos that are not only difficult to watch, but difficult to even describe, says the Guardian newspaper, the researcher who obtained the videos.