Deer stones are Mongolian ancient megaliths carved with symbols. The name comes from their carved depictions of flying deer. Their purpose and creators are unknown. Archaeologists have found around 500 deer stones around Mongolia. However, Cimmerian ruins also show deer stones and they were known to have expanded into the Mongolian area and other areas. The Cimmerians of the early 1st millennium BC left a small number (about ten are known) of distinctive stone stelae-Kurgan stelae.