Cellar Hole
I've never seen a cellar hole down here. Up North they have a lot of cellar holes to preserve food. Down here it is an outbuilding, where you process hams and such. A cellar hole up north protects things from the cold in the wintertime and maintains a certain temperature range.
Down here we look forward to our winters to get away from the hot humid summers. I don't think a cellar hole would work in the south.