Following the overthrow of the Syrian government, civilians flocked to the notorious Saydnaya prison, north of the capital city of Damascus, in the hope of finding out about missing loved ones thought to be detained there.
The prison, referred to as a "human slaughterhouse" by rights groups, is where thousands of people were believed to have been detained, tortured and executed under the Assad regime.
Those who entered the military jail circulated footage showing the stark conditions inside on social media.
"I have relatives in Aleppo, but it is not easy for them to travel to Damascus to see the prison or look for missing people," Sanaa, who lives in Texas, said.
"I hope to save my sister."