The Middle Nok Period is approximately from c. 900–300 BC and in this time period there is a dramatic increase of sites, terracotta fragments and iron objects. Instead of the early period's decoration, which tended to cover most of the pot, instead, there is a decorative band which is bordered by deep horizontal lines. This band appears on the pots' upper half or directly under the rim of the bowls. Some bands have sharp ends as well as impressed zigzag lines or an incised wave or arc. Unlike the Early Nok period the Middle Nok ceramics tend to have more variety in the rim with everted rims, open bowls, bowls with inverted rims and incised line ornaments on the rims' lips.