There is no minimum safe depth at which a body must be interred. The depth of an in-ground burial can vary from 1.5 to 12 feet, sometimes even deeper. Individual jurisdictions specify their own minimum depths, but most are nowhere near six feet. The origin of the idiom “Six feet under”. It was during the Great Plague of London in 1665 that the origin of the idiom “six feet under” came to be. With 20 percent of London’s population succumb...