 Very roughly around 1000 BC a group of people, referred to in the archaeological texts as the "C-group", migrated from Lower Nubia (the area between present-day Aswan and Wadi Halfa) and settled in Upper Nubia (the Nile Valley north of Dongola in Sudan), where they developed the kingdom of Napata from about 750 BC.For some time this kingdom controlled Egypt too, supplying its 25th Dynasty.Contemporary with them are the archaeological remains of another cultural group, "the pan-grave people".