Sur Chico
Local Migration to Lima has occured in great waves from Peru's countryside in search of economic opportunity, turning Lima into the 2nd largest city in America, for decades and with the hope of better work and education people from the Andes and Amazon moved into Lima and developed the so-called Pueblos Jovenes - New towns, settled on very different terrains, on hillsides, river banks and wide sandy expanses occupied by different modes: by slow accreditation or by invasions at different periods, some pueblos jovenes are still in the process of formation, others have been developing for 30 years1
People first  built precarious homes with simple materials to then develop entire neighbourhoods where previously there was an empty desert. The migration proliferated during the 1980s as people flew off from internal conflicts developed by terrorism groups on Peru's countryside.Internal migration continues to occur, people organize in groups to try to take possession of empty land by building their homes in it, the most populate borroughs in Lima started as Young Towns.
1The ‘Young Towns’ of Lima : Aspects of Urbanization in Peru, Peter Lloyd.