Had to go to the source- collected accounts by Foxfire students at Rabun Gap Georgia .
Although drying was a common method of preservation, it was by no means the only one used. Burying fruits and vegetables was both an excellent means of preserving food and a testament to the ingenuity of the mountaineers. In order for the food to keep, the hole had to be well drained and insulated to prevent water accumulation and freezing. Sallie Beaty remembered well her family's potato hole. "Another way we kept our food was by putting it in a hole in the ground. We did our potatoes like this. [After] we dug up our potatoes in the fall, we would dig a hole [in the ground and put them in it]. We put straw or whatever we could find around them. Then we'd hill them up. [Next we] put dirt on top of them to keep 'em from freezing. Then we took an old piece of board or tin and put over the—we called it a hill—so it wouldn't get so wet. You could do turnips and cabbage the same way. Then, as you wanted a mess, you would go out there and get whatever you wanted at a time."
Ada Kelly also recalled her family's hole. "They'd dig a hole to put the apples in, put some hay, straw, or something in there, and just pour them in that hole. They they covered it over with leaves or straw and then heavy soil. Turnips, apples, and potatoes are all buried that way."