Hypocephalus Zodiac Disc Recreation (plaster cast) about 5 3/4 inches round. From Abydos 26th Dynasty 664-525 BC. This Egyptian star map with magical texts was placed under the head of the dead during the Egyptian Late Period to ensure the soul might find its way to the higher worlds. This is the engraved Hypocephalus of Tche-her, son of Utchat-shu, found at Abydos.