The river Nile used to be more wide, more open, bigger and much more water.
The loss of conciousness and the polytheism that started to create a new idea of the temples of the holy places in the River Nile.
Ancient Egypt: The ancient Egyptians, around 5,000 years ago, practiced advanced agricultural techniques along the Nile River.
They used a combination of silt deposits from the annual flooding of the Nile and natural composting to enrich their soil.
The ancient Egyptians were keen observers of the night sky and developed an extensive knowledge of astronomy and astrology, which they used to create a calendar, predict the flood of the Nile, and guide their religious practices.
Other important stars in ancient Egyptian beliefs include Sirius, which was associated with the goddess Isis and the annual flooding of the Nile, and the planet Venus, which was associated with the goddess Hathor and fertility.
Additional stones were brought by boat on the Nile, including white limestone from Tura for the casing and granite blocks weighing up to 80 tonnes from Aswan for the "King's Chamber" structure.
The pyramid was part of a funerary complex that included two mortuary temples connected by a causeway (one near the pyramid and one close to the Nile), tombs for Khufu's immediate family and court, three smaller pyramids for Khufu's wives, a smaller "satellite pyramid," and five buried solar barges.
The heliacal rising of Sirius, known as the "Dog Star," marked the flooding of the Nile River, a vital event in the agricultural calendar of ancient Egypt.
The Egyptian civilization emerged along the Nile River in northeastern Africa, and it is one of the oldest civilizations in the world.
One theory is that the blue skin may represent the color of the Nile River, which was central to the fertility of the land and the success of agriculture in ancient Egypt.