Around in 8,000 BC, Ra's mothership landed somewhere in North Africa. Ra, looking for a host found a young boy. Soon after, he enslaved the inhabitants and built the Great Pyramids as landing path for his mothership. He put a Stargate in Giza and deported many people from Earth to Abydos. In 3,000 BC, Ancient Egyptians rebelled against Ra and the latter fleed Earth while the Stargate was buried. Then, periodicaly, he came by ship on Abydos, to get presents and naquadah from the Abydonians (Stargate).