An intro to my root cellar

Around 2 years ago I became obsessed with root cellars. I found what i thought was a gardening and canning book at a flea market. It was about gardening and canning but more interesting were diagrams of the spaces people had designed to keep their harvest. Until this point I had hardly given a second thought to how people had kept all sorts of food without refrigeration. In the back of my mind in history class I thought of food preservation in terms of my modern diet as well. It just blew my mind to think about how many people used to keep their food this way, and that I could possibly do it. So I dove right in.
Unfortunately  I don't have any photos from the beginning of my work on my root cellar. It never occurred to me to document my progress because frankly I was a little embarrassed. After all, who would spend so much time just digging a hole in the ground?