The
Later Stone Age occupation phase of Birimi, which is associated with the
Kintampo Complex and the origin of agriculture in
sub-Saharan West Africa, has been dated between 3500 and 3000
BP. This former habitation makes for a very ceramic-rich layer on the site. This is the occupation layer of the site that has been investigated the most based on the clear presence of the Kintampo complex. Charred plant remains from Birimi show evidence of the cultivation of
pearl millet, which may have allowed the Kintampo people to be sedentary and establish a
village; there are indications for
wattle and daub structures, as well as evidence of multiple building techniques present, resulting in multiple structures of varying sizes, which has been found at other Kintampo sites. ==Iron Age==