Photographer Tariq Zaidi spent three years documenting and travelling across El Salvador with unprecedented access to prisons and holding cells across the country providing a rare look inside the country's penal system. With the help of the police force, was also able to document the state's war against the gangs

Sin Salida (No Way Out) by photographer Tariq Zaidi documents the impacts of the notorious Mara Salvatrucha gang (MS-13) and its rival Barrio 18 gang members on El Salvador. By depicting the gang members, police, prisons, murder sites, funerals, and the government's war against the gangs, Zaidi illustrates the control the gangs have over the wider Salvadoran society, the violence through which they operate and the grief and loss resulting from the violence.