Ambition on a continental scale
Africa’s Great Green Wall is one of the most ambitious restoration projects ever attempted. Launched in 2007 by the African Union, it aims to create a vast mosaic of restored landscapes stretching roughly 7,775–8,000 km across the Sahel, from Senegal in the west to Djibouti in the east. The original vision described a band 15 km wide, though the actual work varies by country and terrain, sometimes reaching much greater widths.
The goal is straightforward but enormous: slow desertification, restore degraded land, create jobs, strengthen food security, and build climate resilience for communities living on the edge of the Sahara. Tree planting is central, but the project also uses a wide range of local techniques, water harvesting, agroforestry, grazing management, and community-led land restoration, adapted to very different climates, soils, and cultures across more than a dozen countries.
One of its smarter design features is decentralization. Rather than trying to run everything from a single central authority, the initiative hands significant control to national governments and local communities. This recognizes a basic reality: no single plan can fit the full length of the Sahel.
Progress has been real but uneven. Senegal, Ethiopia, and Nigeria have recorded more visible gains. Many other participating countries have moved more slowly, held back by funding gaps, insecurity, political instability, and the sheer difficulty of keeping young trees alive in harsh conditions. The official target remains 2030: restore 100 million hectares of degraded land and create 10 million jobs. Current results fall well short of that pace. Billions have been pledged, including major commitments after the 2021 One Planet Summit, yet far less has reached the ground in consistent, well-monitored form.
Like most projects of this scale, the Great Green Wall is behind schedule. The gap between vision and delivery once again shows why large initiatives need smaller, locally rooted efforts working alongside them. Both are required. Grand plans can set direction and mobilize resources. Local judgment is what keeps the work alive when the money, the weather, or the politics shift.