Zouerate is Mauritania's main mining town, built around the vast iron ore deposits of the Tiris Zemmour region in the far north. There is not much here for travellers beyond the mining operations themselves — but that is not why most people come. Zouerate is the eastern terminus of one of the great train journeys in the world.
Once a day, the iron ore train runs the 700 km line between Zouerate and Nouadhibou on the Atlantic coast. Passenger cars are attached — basic, but functional. The journey takes around 12–16 hours through open Saharan landscape, and the scale of the thing is hard to describe: the ore trains are among the longest in the world, sometimes stretching over two kilometres. Many travellers skip the passenger cars entirely and ride in the open ore wagons, which is cold, dusty, and memorable in equal measure.
The train stops at Choum, about 460 km west of Zouerate, where it meets the road south to Atar — the capital of the Adrar region and the gateway to the ancient desert cities of Chinguetti and Ouadane, both UNESCO World Heritage sites. From Choum you can also head south toward Nouakchott via Akjoujt. The train connection at Choum is what makes Zouerate relevant to travellers routing between the Moroccan border crossing near Nouadhibou and the interior.