The Great Green Wall of Africa is a project that aims to restore a strip of land stretching from Senegal to Djibouti in order to boost food security and improve the health and living standards of local communities. The work of the Téssékéré International Observatory on Humans and the Environment documents the patchwork of actions carried out in the interest of the environment but also the local people. In Senegal, the Fulani population of the Ferlo region is a case in point.