MORE Secrets Discovered in Giza Pyramid
A robot camera has revealed markings inside tunnels beneath the Giza Plateau that have remained unseen for at least 4,500 years. The hieroglyphic symbols are in red paint and may have been made by masons when the chamber was being built, as sort of a "blueprint" written right on the stones.
On CNN.com, Nuala Calvi quotes Egyptologist Peter Der Manuelian as saying, "Sometimes they identify the work gang (who built the room), sometimes they give a date and sometimes they give guidelines to mark cuttings or directional symbols about the beginning or end of a block." Similar markings have been found elsewhere in Giza.
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