Rectangular piece of bone. Decorated with six groups of three concentric circles. Outer surface is slightly convex, and is split into two parts by three sets of two incised lines running across the shortest axis. Between these lines are the circles. Two side by side in one space, and four arranged in a diamond shape in the other space. One end of the piece is flat, the other cut into three points. There are two holes cut through the opposite end. Traces of modern paint or glue on the undecorated side of the piece. Possibly an inlay piece, or a lid. Appears to be intact.