Ancient Great Delta culture was a prehistoric neolithic culture located in the Great Delta area. It existed from 4000 BK to 2500 BK, after the time that the Garric peoples had disappeared.
The Ancient Great Delta culture had no writing system, so it is impossible to know their exact history and language(s) they spoke. Given the location, art style, and tools apparently associated with the culture, they were most likely to be western-Ulitan-speaking people.
Archaeological findings showed that the Ancient Great Delta culture had agriculture and economic disparity; most skeletons that have been discovered show signs of malnutrition. They may have had social hierarchies and even small kingdoms with kings; in contrast, few metallic tools have been discovered. Tools made of copper and bronze, including weapons, were very scarce, and iron-made tools and weapons have not been found in Ancient Great Delta sites. Furthermore, all metallic tools and weapons related to this culture have been discovered in tombs and houses of suspected aristocrats. Current consensus holds that these copper-made and bronze-made tools were imported from the south.
It is thought that the Ancient Great Delta culture practiced human sacrifice, as some skeletons display signs of ritually killing. Polygamy appears to have been endemic to the Ancient Great Delta culture, with men appearing to have been able to take multiple wives.