Excavated Architecture: Caves Molded from Earth

Design a building in the manner of Junya Ishigami cast by digging holes in the earth, pouring concrete directly against the raw soil, then excavating the ground away, so the finished surfaces record the texture of the hole rather than any formwork. Compose cave-like concrete volumes with rough irregular walls bearing the imprint of soil and roots, openings of unplanned organic outline connecting the chambers, no flat surface anywhere, dim interior with a single shaft of daylight from a hole above, eye-level view into the cavern, 24mm lens, architectural photography, ultra photorealistic, 8K