On the periphery of history in antiquity, there was a land known as Kush. Overshadowed by Egypt, to the north, it was a place of uncharted breadth and depth far up the Nile, a mystery verging on myth. One thing the Egyptians did know and recorded — Kush had gold.

Scholars have come to learn that there was more to the culture of Kush than was previously suspected. From deciphered Egyptian documents and modern archaeological research, it is now known that for five centuries in the second millennium B.C., the kingdom of Kush flourished with the political and military prowess to maintain some control over a wide territory in Africa.

Kush’s governing success would seem to have been anomalous, or else conventional ideas about statehood rest too narrowly on the experiences of early civilizations like Mesopotamia, Egypt and China. How could a fairly complex state society exist without a writing system, an extensive bureaucracy or major urban centers, none of which Kush evidently had?

Archaeologists are now finding some answers — at least intriguing insights — emerging in advance of rising Nile waters behind a new dam in northern Sudan. Hurried excavations are uncovering ancient settlements, cemeteries and gold-processing centers in regions previously unexplored.