Terracotta statues were found at Katsina Ala in the middle of the twentieth century. They include realistic representations of human heads, with some animals, and parts of larger statues. The statues are similar to others found at
Nok, about 209 km to the north, and are thought to have been made by people of the same culture. The human figures most likely represented ancestors or spirits. According to
Bernard Fagg, an archeologist who undertook extensive studies into the Nok culture, the works at Katsina Ala constitutes a distinctive sub-style. Statues from
Taruga and from
Samun Dukiya are similar, but have typical stylistic differences. Iron working began at the site in the fourth century BC, somewhat later than iron working at Taruga. Smelted tin beads have also been found on the site, some of which could be imitations of cowrie shells. == Climate ==