I couldn't dig a root cellar, or cave, as the water table is very high in my area, lots of springs and artesian wells, I solved the problem by digging into the side of the mountain on which I live. I put up poured concrete walls and top slab and piled dirt on both sides. The front is exposed to date but is protected from the sun by a polebarn roof. The top slab is still uncovered as I'm considering a smoke house on top of the "cave" So far I have only kept apples and potatos but they kept very well. The floor is about 10" of rough gravel. Also, don't give up on dehydration, this past year we dryed a lot of apples, tomatoes, okra and beans and have really enjoyed them. With a good dehydrator, we slice the items thin, place them on the six shelves set the heat and forget about for a few days. When the items are dry, put them in a ziplock and your set for the Winter. My Lady puts the tomatoes directly into soups, stews etc or places the item in a small amount of water to re-hydrate them. Best apple pies ever.Good luck.