A meter of soil is a pretty good insulator. There is plenty of more newer houses built like this by enthusiasts, that practically go without extra heating or ac, because the sun warms it up enough in winter and the soil keeps it cool enough in summer.
Apparently has plenty of light inside. I wonder if the cold would eventually seep in. Or what the plants and water are going to do to the structure.
A meter of soil is a pretty good insulator. There is plenty of more newer houses built like this by enthusiasts, that practically go without extra heating or ac, because the sun warms it up enough in winter and the soil keeps it cool enough in summer.