Kiffa is a desert town on the Route de l'Espoir, roughly halfway between Nouakchott and Nema in southern Mauritania. Most travellers pass through on the long east-west crossing, but it is worth a stop rather than just a fuel break.
The town has a lively market and is famous across West Africa for Kiffa beads — elaborately decorated glass beads made by local women using a centuries-old powder glass technique. They are beautiful objects, and the market is the place to find them. A canyon near town makes for an interesting excursion if you have a 4x4.
Accommodation is limited. There is no real hotel in town, though a guesthouse on the Nouakchott approach road offers basic rooms. Kiffa is spread out and dusty, but the people are welcoming, and the market alone makes the stop worthwhile.