Iran's largest surviving ice house — a 20-meter-high conical dome that manufactured ice in 40°C desert heat without any modern technology. The thermodynamic engine consists of four integrated components: a stair-step dome designed as a parabolic curve to minimize solar absorption and maximize internal convection, a 20-meter north-facing shade wall that blocks direct sunlight from the freezing pool, underground drainage channels connected to the qanat system, and a subterranean ice pit where temperatures remain below freezing year-round. The dome's stepped construction reduces structural pressure while creating shadow zones on its own surface. Iranian National Heritage #2437. This is architecture as physics — geometry IS the technology, predating mechanical refrigeration by 2,000 years.
Wikipedia| Star ▴ | Rise Az ▴ | Rise Δ ▴ | Set Az ▴ | Set Δ ▴ | Tradition ▴ |
|---|---|---|---|---|---|
| 61.8° | — | 298.2° | — | ||
| 91.4° | — | 268.6° | — | ||
| 109.4° | — | 250.6° | — | ||
| — | — | — | — | ||
| 43.5° | — | 316.5° | — | ||
| 76.2° | — | 283.8° | — | ||
| 70.8° | — | 289.2° | — | ||
| 121.0° | — | 239.0° | — | ||
| 124.9° | — | 235.1° | — | ||
| 67.6° | — | 292.4° | — | ||
| 124.2° | — | 235.8° | — | ||
| 56.0° | — | 304.0° | — |