Picture stone
A picture stone, image stone or figure stone is an ornate slab of stone, usually limestone, which was raised in Germanic Iron Age or Viking Age Scandinavia, and in the greatest number on Gotland. More than four hundred picture stones are known today. All of the stones were probably erected as memorial stones, but only rarely beside graves. Some of them have been positioned where many people could see them at bridges and on roads.
They mainly differ from runestones by presenting the message in pictures rather than runes. Some picture stones also have runic inscriptions, but they tell little more than to whom the stone was dedicated. Lacking textual explanations, the image stones are consequently difficult to interpret. Similar stones in Scotland are known as Pictish stones.
Groups
The dating of the stones is based on studies of their shapes and ornamentations. Subsequently, three distinct groups of stones exist with various aesthetics, locations and purposes.
400-600 CE
The first group of picture stones was made in the period 400–600 CE. These have a straight form and the upper part is shaped like the edge of an axe. The ornamentations are usually circular forms with vortex patterns and spirals, but also with images of ships, people, and animals. These older stones were usually raised within grave fields, albeit not on the graves themselves.