The Seti temple above ground doesn't physically connect to the Osirion below. Rather than following the standard straight temple layout, it turns left in an L-shape. Egyptologists debate whether Seti built around an already ancient underlying structure or if the Osirion was his own intended cenotaph—some argue he discovered something beneath and chose to build around it rather than through it.
Seti temple built in L-shape to avoid Osirion structure below

Key facts
- The Seti temple above ground does not connect physically to the Osirion
- Seti's temple goes left in an L-shape rather than following standard straight temple layout
- The temple reportedly turned to avoid encountering the buried Osirion structure
- The Osirion sits approximately 25 feet below current ground level
- Egyptologists suggest Seti discovered an already buried structure and built around it
Site mentioned
Sources
Osireion - Wikipediaen.wikipedia.org
The Osireion (or Osirion) is believed to be the cenotaph of Seti I, located to the rear of the Temple of Seti I at Abydos, Egypt.
Abydos. Osirion. - ISIDA Projectisida-project.ucoz.com
Osirion is the underground building, adjacent to the western wall of the Temple of Seti I at Abydos. Osireion was discovered by the British archaeologists.
The Osirion at Abydos (Abtu) - Ascending Passageascendingpassage.com
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The 'Osireion' Temple at Abydos: A unique structure which simulates ...thearchaeologist.org
Its design is believed to be based on the rock-cut tombs in the Valley of the Kings. Reached by a 420-ft subterranean passage, the centre of its ...
The Osirion at Abydos: The Ancient Egyptian Temple Still Defying ...marahouseluxor.com
A first-hand account of rare private access inside the Osirion at Abydos. Explore its subterranean design, granite engineering, water ...
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