What is Tana ware?

Tana ware refers to a type of prehistoric pottery prominent in East Africa that features a variety of designs, including triangular incised lines and single rows of dots. The presence of this pottery is largely regarded as one of the best indicators for early Swahili settlement. This pottery tradition falls chronologically during the Iron Age in East Africa, during the late first millennium AD and spanning several hundred years. The name Tana ware was given because the early discoveries of these types of pottery were along the Tana River in present day Kenya.