・・・This we can assume with some certainｔy , for there is form evidence that Osiris's tomb was thought to have existed within the island of mound of first creation, like those seen in the Fifth Hour of the am-duat text.
Here it records that the "sanctified Territory which Ptah founded ,and which men call the beginning of the Earth, was at the same time a burial place in which Osiris was believed to rest. "（Emphasis in the original.）
Thus it becomes clear that the ancient Egyptian island or mound of creation was synonimous with the tomb of Osiris, which had originally been the domain of Sokar as both guardian and internee of the Shetayet.
If correct, then we can safely conclude that all these locations were one and the same and that their prototype, symbolizing the place of first creation, existed somewhere in the vicinity of Rostau-that is, the Giza pyramid field.