Philippines: inside one of the world's largest prisons

New Bilibid Prison (NBP), on the outskirts of Manila, was built decades ago for a maximum 5,500 inmates. Now more than 14,200 prisoners live there, crammed together in cells and outnumbering prison guards by a staggering 80:1.

Ninety-five percent of inmates of NBP belong to 12 gangs, according to research by Clarke Jones and Raymund Narag, who took these images in the summer of 2012. Gang culture within the prison often leads to violence, but they say it also fills an important void.

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