Serdab

A serdab (Persian: ‏سرداب‎), literally meaning "cold water", which became a loanword in Arabic for 'cellar') is an ancient Egyptian tomb structure that served as a chamber for the Ka statue of a deceased individual. Used during the 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.