Karnak

University of Southampton has posted Ben Pennington's history of Karnak. We learn that in primordial Egypt, this was a sandbar which became dry land after the Nile Flood. At some point the Egyptians thought this a symbol of the emergence of land from the Ocean. So, 2200s BC, the Thebans built a temple on it.

Even then the pyramids downstream were a few centuries old. To give an idea how colossally ancient this civilisation is.

Thebes followed the Sun-god as Amun, as you'll see in the Pharaohs' names of the 18th Dynasty; the more-Delta-aligned 19th preferring Ra. We're starting at the Sixth Dynasty - or later; the rise in Thebes' profile might herald the intermediate period when Egypt fractured into "nomes". It seems suggestive there's already a ref to "Ra-Amun". The Amun-Ra syncretism is famed in the Pharaonic Dynasties, so it surprises me to see this so early.

The "Ra-Amun" ref comes in the 2000s BC from one of the three Intep petty-kings. It may be they were aiming to reünite the Two Lands. Not long after 2000 BC, Egypt would be one again.