- 🛡️ architectural rules for a truly eternal wall (target: 10,000–100,000+ years)
- blocks
- block shape: hexagonal prism
- block size:
- flat-to-flat diameter: 30–40 cm
- block thickness: 20–25 cm
- block height per row: 15–25 cm
- block weight: 20–35 kg (manageable manually)
- material: pure basalt or comparable ultra-dense stone (density >2800 kg/m³)
- joints
- joint thickness: 0.3–0.5 mm
- mortar: improved roman concrete
- no organic additives: pure mineralization
- joint firing
- after laying, heat joints to 400–600 °c
- slow and even heating and cooling to avoid cracks
- block arrangement
- alternating rows (every block overlaps at least 3 lower blocks)
- honeycomb-type staggered pattern
- special trimmed hexagonal blocks at corners
- roofing and drainage
- roof overhang minimum 1.5 meters on all sides
- steep roof pitch: >35°
- raised foundation: minimum 50 cm above ground level
- foundation sits on 40–50 cm layer of coarse basalt gravel
- full perimeter drainage system (channels or rock trenches)
- protection of joints and walls
- thin mineral wash coating:
- slaked lime + volcanic ash + basalt powder + water
- applied in 2 thin layers (~0.5–1 mm total)
- natural slow carbonation over centuries
- no paints or synthetic seals allowed (they trap moisture)
- 🧬 evolution of the wall across epochs
| era | what happens | effect on the wall |
|---|
| :---- | :------------- | :------------------ |
| 0–10 years | initial micro-shrinkage and carbonation | pores close, mortar hardens, initial mineral bonding strengthens |
| 10–100 years | progressive crystallization and strengthening | wall becomes semi-monolithic, improved compressive strength |
| 100–1000 years | slow internal mineral growth | porosity decreases, structure self-heals minor imperfections |
| 1000–5000 years | complete inner pore stabilization | wall transitions into a synthetic rock, near-perfect mineral cohesion |
| 5000–10,000 years | surface micro-polishing by rain, wind | slight aesthetic smoothing, no structural damage |
| 10,000–100,000 years | geological-level stability phase | wall behaves as natural basalt formations, survival limited only by massive geological events |
- 🔥 laser cutting technology for ultra-thin basalt joints
- high-power CO₂ laser or fiber laser
- power requirement: 12–20 kW minimum
- cutting speed: 2–10 mm/min
- continuous water mist or inert gas (N₂, air) cooling required
- ideally pre-heat the stone slightly to avoid thermal shock
- results
- cutting precision: <0.3 mm joint tolerance
- no mechanical vibration, no micro-cracks
- highly polished contact surfaces
- practical notes
- cutting should be done on-site if possible to avoid transportation damage
- portable gantry systems or modular laser rails can be deployed
- ✨ final summary
- hexagonal basalt blocks
- laser-cut surfaces
- ultra-thin joints: <0.5 mm
- pure mineral mortar, no organics
- joint firing after construction
- wide roofs and perfect drainage
- result
- a wall capable of lasting 100,000+ years
- behaving more like a natural basalt cliff than a conventional structure
- requiring almost zero maintenance for millennia