The document discusses the growth of slums, known as barriadas, on the outskirts of Lima, Peru. It describes how the barriadas formed due to mass migration from rural areas to Lima seeking work. Over time, the barriadas developed from informal settlements of mat huts to established neighborhoods with permanent housing, infrastructure and community services. However, the government policies toward the barriadas have fluctuated between eradication and containment or improvement, with no clear long-term solution to address their rapid growth and needs of the residents.