A boundary drawn across Cap Blanc
At the edge of the Sahara, the long, narrow Cap Blanc peninsula—also called Ras Nouadhibou—extends into the Atlantic. A political boundary cuts across its sandy neck, dividing the peninsula between Mauritania and Western Sahara. It does not trace a ridge, river, or other obvious feature in the land.
The line reflects colonial-era negotiations, not a natural divide. In 1900, France and Spain agreed on a boundary in this region while France controlled what became Mauritania and Spain controlled the territory then known as Spanish Sahara. On a mostly flat, sparsely settled desert coast, a boundary could be described as a simple line rather than fitted to a prominent landscape feature.
One peninsula, two very different fortunes
The northern part became home to Nouadhibou, Mauritania’s major Atlantic port and a center of fishing and iron-ore shipping. Farther south, La Güera, once a Spanish settlement, was largely abandoned. The peninsula’s geography makes the contrast striking: places on the same narrow strip of land face the same ocean and desert, yet belong to different political territories.
Western Sahara’s status remains disputed, so the border’s political context is more complicated than a simple line between two universally settled countries. But its physical appearance still tells a clear story: the peninsula’s division came from decisions made on maps, not from a boundary visible in the terrain.
