Serdab

Old Kingdom, the serdab was a sealed chamber with a small slit or hole to allow the soul of the deceased to move about freely. These holes also let in the smells of the offerings presented to the statue.^[1]

Second Dynasty.^[3] It is easiest recognized by its position in the east end of the pyramid's internal chamber system and the three niches in its outer wall. The earliest serdab of this type is found in the pyramid of Menkaure, but it was during the reign of Djedkare Isesi that it became a part of the standard pyramid layout. ^{[citation needed}