3. Transparent Roof
Above the excavation, a sturdy frame supports a transparent roof angled to capture the most sunlight possible.
Depending on materials available, the covering may be made from polycarbonate panels, greenhouse plastic, or reclaimed window glass.
4. Thermal Stability
Because the surrounding soil acts as thermal mass, temperatures inside a Walipini rarely fall below freezing, even in deep winter. The moderated day-to-night cycles create a more stable environment for tender crops, extending growing seasons dramatically.
5. Low-Tech Enhancements
