Fouta Djallon is a highland region in the centre of the Republic of Guinea, West Africa. The indigenous name in the Pular language is Fuuta Jaloo. The origin of the name is from the Fula word for the region plus the name of the original inhabitants, the Yalunka or Jalonke (French: Djallonké), a Mande people closely related to the Susu.
Fouta Djallonke consists mainly of rolling grasslands, at an average elevation of about 900 m (3,000 ft). The highest point, Mount Loura, rises to 1,515 m (4,970 ft). The plateau consists of thick sandstone formations which overlie granitic basement rock. Erosion by rain and rivers has carved deep jungle canyons and valleys into the sandstone. The word Djallonke originated from the people who originally occupied the region.
It receives a great deal of rainfall, and the headwaters of four major rivers:
It is, thus, sometimes called the watertower (chateau d'eau in French literature) of West Africa. Some authors also refer to Fouta Jallon as the "Switzerland of West Africa." This is a common expression whose origin may be unknown.
The population consists predominantly of Fula or Fulani people (who call themselves Fulɓe [sing. Pullo] and are known in French as Peul). In Fuuta Jaloo their language is called Pular, which is a dialect of Fula like Pulaar in Senegambia and Fulfulde further east in West Africa, but with some particular characteristics.