Rising as twin brick towers above the coastal city of Quy Nhon, Thap Doi represents the Cham civilization's extraordinary mastery of fired-brick construction without visible mortar — a technique still not fully understood. Built between the 12th-13th centuries during the late Champa kingdom, these tapering Hindu temple towers once housed Shiva lingams and were oriented to catch monsoon winds through precisely angled ventilation channels. The towers stand 20m and 18m tall, constructed from handmade bricks bonded with a mysterious resinous compound. At 297.58° Giza bearing, Thap Doi aligns with the broader Cham temple corridor stretching from My Son to Po Nagar — all sharing consistent azimuth orientations that predate GPS by a millennium.
WikipediaStellar Alignments (89 stars)
| Star ▴ | Rise Az ▴ | Rise Δ ▴ | Set Az ▴ | Set Δ ▴ | Tradition ▴ |
|---|---|---|---|---|---|
| Pleiades (Alcyone) | 87.2° | — | 272.9° | — | |
| Orion's Belt (Alnilam) | 105.0° | — | 255.0° | — | |
| Sirius | 111.4° | — | 248.6° | — | |
| Thuban | — | — | — | — | |
| Vega | 45.8° | — | 314.3° | — | |
| Regulus | 65.3° | — | 294.7° | — | |
| Aldebaran | 92.0° | — | 268.0° | — | |
| Antares | 97.3° | — | 262.7° | — | |
| Fomalhaut | 135.9° | — | 224.1° | — | |
| Arcturus | 43.0° | — | 317.0° | — | |
| Galactic Center (Sgr A*) | 105.1° | — | 254.9° | — | |
| Galactic Anti-Center | 75.0° | — | 285.0° | — | |
| Deneb | 52.3° | — | 307.8° | — | |
| Capella | 60.0° | — | 300.0° | — | |
| Castor | 62.1° | — | 297.9° | — | |
| Pollux | 64.5° | — | 295.6° | — | |
| Procyon | 85.3° | — | 274.7° | — | |
| Betelgeuse | 95.0° | — | 265.0° | — | |
| Rigel | 113.7° | — | 246.3° | — | |
| Bellatrix | 98.6° | — | 261.4° | — | |
| Achernar | — | — | — | — | |
| Acrux | 131.7° | — | 228.3° | — | |
| Mimosa | 127.8° | — | 232.2° | — | |
| Altair | 81.2° | — | 278.8° | — | |
| Kochab | — | — | — | — | |
| Dubhe | 13.0° | — | 347.0° | — | |
| Alkaid | 9.9° | — | 350.1° | — | |
| Mizar | — | — | — | — | |
| Hamal | 90.2° | — | 269.8° | — | |
| Zubenelgenubi | 82.6° | — | 277.4° | — | |
| Alnitak | 105.3° | — | 254.7° | — | |
| Mintaka | 104.5° | — | 255.5° | — | |
| Saiph | 112.1° | — | 247.9° | — | |
| Peacock | 144.7° | — | 215.3° | — | |
| Miaplacidus | 146.7° | — | 213.3° | — | |
| Rigil Kentaurus | 129.8° | — | 230.2° | — | |
| Hadar | 127.8° | — | 232.2° | — | |
| Gacrux | 125.2° | — | 234.8° | — | |
| Naos | 126.5° | — | 233.4° | — | |
| Suhail | 123.7° | — | 236.3° | — | |
| Avior | 142.0° | — | 218.0° | — | |
| Atria | 140.4° | — | 219.6° | — | |
| Regor | 132.6° | — | 227.4° | — | |
| Alsephina | 135.9° | — | 224.1° | — | |
| Shaula | 112.0° | — | 248.0° | — | |
| Ankaa | 156.0° | — | 204.0° | — | |
| Menkent | 102.3° | — | 257.7° | — | |
| Alpheratz | 82.0° | — | 277.9° | — | |
| Eltanin | 29.9° | — | 330.1° | — | |
| Kornephoros | 49.7° | — | 310.3° | — | |
| Rasalhague | 63.6° | — | 296.4° | — | |
| Denebola | 54.3° | — | 305.7° | — | |
| Alhena | 82.4° | — | 277.6° | — | |
| Alphard | 89.0° | — | 271.0° | — | |
| Bharani | 93.0° | — | 267.0° | — | |
| Pushya | 67.6° | — | 292.4° | — | |
| Adhara | 123.2° | — | 236.8° | — | |
| Wezen | 119.8° | — | 240.3° | — | |
| Navi | 51.3° | — | 308.7° | — | |
| Schedar | 55.3° | — | 304.7° | — | |
| Nunki | 108.5° | — | 251.5° | — | |
| Canopus | 148.1° | — | 211.9° | — | |
| Kaus Australis | 113.3° | — | 246.7° | — | |
| Sabik | 89.5° | — | 270.5° | — | |
| Scheat | 80.0° | — | 280.0° | — | |
| Enif | 91.4° | — | 268.6° | — | |
| Diphda | 131.8° | — | 228.2° | — | |
| Alphecca | 40.3° | — | 319.7° | — | |
| Rasalgethi | 60.4° | — | 299.6° | — | |
| Spica | 77.1° | — | 282.9° | — | |
| Zubeneschamali | 76.6° | — | 283.4° | — | |
| Unukalhai | 61.8° | — | 298.3° | — | |
| Murzim | 116.6° | — | 243.4° | — | |
| Phact | 136.1° | — | 223.9° | — | |
| Mirfak | 61.8° | — | 298.2° | — | |
| Vindemiatrix | 54.8° | — | 305.2° | — | |
| Markab | 92.6° | — | 267.4° | — | |
| Algol | 71.4° | — | 288.6° | — | |
| Sadalmelik | 103.1° | — | 256.9° | — | |
| Sadalsuud | 105.0° | — | 255.1° | — | |
| Sun (Summer Solstice) | 65.8° | — | 294.2° | — | |
| Sun (Winter Solstice) | 114.2° | — | 245.8° | — | |
| Sun (Equinox) | 90.0° | — | 270.0° | — | |
| Sun (Northern Cross-Quarter) | 73.0° | — | 287.0° | — | |
| Sun (Southern Cross-Quarter) | 107.0° | — | 253.0° | — | |
| Moon (N Major Standstill) | 60.4° | — | 299.6° | — | |
| Moon (S Major Standstill) | 119.7° | — | 240.3° | — | |
| Moon (N Minor Standstill) | 70.7° | — | 289.3° | — | |
| Moon (S Minor Standstill) | 109.3° | — | 250.7° | — |
Convergence Events (6)
297.6°
Alphecca Set
Celtic (Caer Arianrhod), Arabic, Aboriginal, Pawnee (council ring)
Δ 0.0°
298.1°
Bharani (41 Arietis) Set
Hindu/Vedic (death/rebirth nakshatra), IAU named
Δ 0.6°
298.9°
Pollux Set
Greek (Dioscuri), Hindu (Punarvasu), Chinese, Arabic
Δ 1.4°
299.0°
Scheat Set
Hindu (Purva Bhadrapada), Arabic, Chinese, Persian
Δ 1.4°
300.0°
Alpheratz Set
Chinese (Wall/Bi mansion), Arabic, Hindu
Δ 2.5°
294.9°
Pleiades (Alcyone) Set
Maya, Greek, Aboriginal, Hindu (Krittika), Japanese (Subaru)
Δ 2.7°
Related Sites — Giza / Orion Extraction