After the sinking of Atlantis, Earth came to be colonized and heavily controlled by yet another extraterrestrial Race, known as the Nibirurans, who created the Sumerian Civilisation in Mesopotamia. They also were known as The Anunnaki ("The Astronauts"), a Race of "Gods" who descended upon Earth from their roving "Battleship Planet" Nibiru in order to mainly exploit our gold mineral resources. The Battle Planet Niburu was originally built in the Pleiades by the Galactic Federation for Galactic peace keeping purposes. Nibiru was constructed as a hollow sphere four-times the size of Planet Earth. Its 4th Dimensional inhabitants live exclusively on the inside, where they have a fully verdant landscape complete with lakes and rivers similar to those on Earth. Nibiru is at present confined, as a Galactic Federation punishment for their interference on Earth, to a permanent orbit ranging from out of our Solar System as far as the Sirius Star cluster to then returning into our Solar System every 3.6 thousand years. At this time it is currently passing through our Solar System, though at present invisibly "cloaked" from our 3rd Dimension Earth vision