The stepped arrangement of these two blocks is most likely a result or rearrangement and reuse in later phases. The lower block appears to be a fourth of it's original size as if it broke on the top and southern face. It is impossible to say whether or not the stones are in their original position from the earliest phase. It is clear that in a later phase, the stones were used to close off Room 15 as evidenced by the corner reparations between them and the later concrete walls.