Nub's Tomb was a vast underground burial location and all of its connecting corridors and chambers built as the final resting place of Nub, an ancient priest of Babylon and later king of the eponymous Nubian region in northeastern Africa.
In 1923, Heinrich Hörner opened King Solomon's Mines at the site of the Meroë pyramids in Anglo-Egyptian Sudan. There, an elaborate puzzle had been built that required the collection of three gems and an artifact called the Eye of Horus to unlock the entranceway into a huge tomb beneath the mine. The mine site, however, was soon mysteriously abandoned for unknown reasons.
In 1947, Indiana Jones, seeking a piece of the Babylonian "Infernal Machine", discovered Hörner's unburied corpse near the mine opening. After reactivating the electrical mine cart system, Jones collected the items that completed the tomb puzzle, thus successfully opening and entering the tomb. Jones confirmed that the tomb was in fact built by Nub and his workers. Within the tomb, Jones unexpectedly found still-functioning, highly advanced robots that had been presumably designed by Nub himself as guardians against intruders.
Navigating the complex labyrinthine corridors of the tomb, Jones eventually came to the inner crypt in which Nub's personal sarcophagus was found, though it very plain in appearance and Nub's own corpse inside was not mummified. There, Jones also discovered the fourth and final piece of the Infernal Machine. The crypt itself was guarded over by the largest of Nub's robots, which used concentrated radiation beams and blade-like claws to kill potential tomb raiders. Jones defeated the mechanical beast by luring it onto electrified floor panels. He then found an exit to the crypt that deposited him at an unmarked, concealed location in the middle of the desert.