This unconventional home utilizes the earth itself as insulation and protection from external elements. Carved into a secluded hill, the subterranean house benefits from geothermal heating, naturally cool spaces in summer, and total protection from the elements. Solar panels on the surface power the energy-efficient interiors, while skylights and strategically placed windows bring natural light deep into the space. The design features simple living spaces like a kitchen and sleeping area alongside a cozy library nook and private garden. Surrounded by natural rock formations, this home proves that minimal impact can still result in luxurious living.