Why “Comb” in “Comb Graves”?

Comb graves, featuring two long slabs laid over the grave to form a peaked roof, are found in parts of the Southern United States, but primarily in Tennessee. Comb in this sense is an architectural word that refers to “the peak of a roof,” just as a rooster’s comb is the uppermost part of the bird. These structures are sometimes called tent graves. Richard C. Finch has researched this tradition extensively. This is part of a complete episode.