Before colonization, the Thiès Plateau was a wooded frontier between the kingdoms of Cayor and Baol inhabited by the Serer-Noon, an ethnic sub-group of the Serer people.
Antes colonización, a meseta de Thiès era unha fronteira boscosa entre os reinos de Cayor e Baol habitada polos Serer-noon, un subgrupo étnico dos serer.