Welcome to San Pedro prison in La Paz, Bolivia, also known as "prison city," a walled-off colony where no guards dare enter. Inside, the prisoners run the place, left to fend for themselves. With the guards and police powerless to intervene, it's survival of the toughest in this anarchic system.

Welcome to San Pedro prison in La Paz, Bolivia, also known as "prison city," a walled-off colony where no guards dare enter. Inside, the prisoners run the place, left to fend for themselves. With the guards and police powerless to intervene, it's survival of the toughest in this anarchic system.