This city, on the north-east of Mexico, is rich in underage sex. Driven by poverty and lured by the prospect of wealthy gringo customers, girls as young as 10 prostitute themselves for as little as $2. "But I am already too old," says Adrianna, a pretty 17-year-old who has been working since she was 12. "Gringos prefer girls between 10 and 14."
Mexico has one of the world's worst reputations for child prostitution. Mexico has just been visited by the Juan Miguel Petit, the UN's special rapporteur on child prostitution, child pornography and trafficking of women and children.