The report focuses on a question of geometric ornamentation of the Late Bronze Age pottery (18-13 cent. BC) and its symbolic component. It is noted that the ornamental area was not organized only horizontally but also demonstrates well-constructed vertical design. The intersection of horizontals and verticals form a conventional structured shape (cross, tree, anthropomorphic figure). This was a common pattern of creation of decorative areas on the pottery of Timber-grave community. In search for the point of intersection of composition "cross" it is important to identify an added (supplementary) element, which is the key to understanding meanings. This element acquires the status mark, regardless of configuration. Any element of ornament in a particular context can be a sign. Supplementary sign denotes an axis of composition. Signs or decor components located on both sides of the axial are subordinate, forming a kind of iconostasis in symbol equivalent. Traceable diversity of details and combinations of elements of geometric ornamentation requires the individual assessment of each composition.