This document discusses slum mapping and the organization Map Kibera. It summarizes how Map Kibera mapped Kibera, one of Africa's largest slums located in Nairobi, Kenya, which was previously a blank spot on maps. The mapping project in Kibera empowered locals and provided accurate data for government services and project planning. It also discusses how similar mapping projects have been done in other locations like Dar es Salaam, Tanzania, Haiti, Palestine, and how mapping can help visibility, education, opportunity, and community for slum residents.