This fact makes it possible to date a mummy even if the finding context is unrecorded and any inscription and funeral equipment is absent. During Predynastic time the mummification was primarily natural by deposing the dead bodies in oval holes in the desert ground. The dead bodies were laid down in an embryo-like, but soon first attempts were made to improve the natural mummification: Viscera were taken out and a resin made of Pistacho was already in use