Make this root cellar by burying a new concrete septic tank into a hillside. Stow your surplus with these underground root cellar plans. This modern root cellar design turns a never-used septic tank ...

I once had the opportunity to "visit" a root cellar when I lived in West Virginia. It was built into a small hill and had lots of rock, dirt and sod as insulation. A root cellar is just that - a ...