The funerary avenues (part of one shown here) date back around 4,500 years in Saudi Arabia.Image credit: Royal Commission for AlUla
Maybe people are overthinking this. When traveling in Mexico I would see crosses and flowers along the road. I though maybe these were tombs, then someone told me they were just markers for where people had died in an accident. I wonder if the big figures are for adults, and the small ones for children. Have they actually dug up bodies where these symbols are?