A coarse pottery with deep round-based bowls decorated with pits and comb impressions and used in the circumpolar cultures of the forest zone of northeast Europe. The area includes that around the southern Baltic and glacial outwash of central and eastern Poland. Its makers were probably hunters and fishers, making little use of the techniques of food production, although adopting such Neolithic traits as pot-making an ax-grinding. There are few sites and little data.