Seleucia Pieria – Harbour of Antioch at Samandağ
Seleucia in Pieria · Port of Antioch · Samandağ Harbour
Hellenistic to Byzantine (300 BCE – 600 CE)·Seleucid / Roman / Byzantine·🇹🇷 Hatay, Samandağ, Turkey
About
About Seleucia Pieria – Harbour of Antioch at Samandağ
Seleucia Pieria, port of Antioch founded 300 BCE by Seleucus I, preserves a silted harbour basin 600×400 m now meadow at Çevlik, 2 m above sea level, and the 1.4 km Vespasian–Titus tunnel diverting floodwater from the harbour. Excavations by Pamir, Wilker and Erol mapped the inner harbour's ashlar quays now 2 m inland under alluvium, and the outer basin's submerged mole base at 36.1169°N 35.9269°E drowned 1 m offshore. Harbour siltation by the Orontes after the 526 Antioch earthquake sealed the basin; the tunnel's inscription dates 69–81 CE floodworks. Harbour mud cores contain Seleucid to Byzantine ceramics sealed under 3 m alluvium, anchoring Hatay plain progradation.
Why it mattersLargest Seleucid harbour; basin + tunnel complex is UNESCO tentative and type-site for Antioch–Orontes silt chronology and Roman flood engineering.
Open questions
Mysteries & theories
Mysteries
- 01Whether outer basin had lighthouse on mole head
- 02Chronology of Orontes avulsion sealing inner harbour
Theories
- 01526 earthquake triggered Orontes avulsion that buried inner quay under 3 m silt in single season
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- 300 BCE (Seleucus foundation); inner harbour ashlar 3rd c. BCE; tunnel 69–81 CE
- Period
- Hellenistic to Byzantine (300 BCE – 600 CE)
- Culture
- Seleucid / Roman / Byzantine
- Purpose
- Imperial port of Antioch – Silk Road terminus, Roman grain fleet harbour
- Abandoned
- c. 600 CE (Orontes siltation and 526 earthquake dam)
- Rediscovered
- 1788 Pococke; 1930s Stillwell; 1995 Pamir harbour basin excavation; tunnel UNESCO tentative
- Excavation
- Buried
300 BCE
Seleucus I founds Seleucia as port of Antioch
69–81 CE
Vespasian–Titus tunnel built to divert floodwater from harbour
526 CE
Antioch earthquake dumps Orontes silt sealing basin
On the ground
Structures & features
36.0900° N · 35.9669° E · 2 m · 3 mapped features
Inner Harbour Ashlar Quay
harbour600×400 m silted inner harbour – ashlar quay buried 2 m under alluvium at Çevlik
36.1100° N · 35.9600° EVespasian–Titus Flood Tunnel
canal1.4 km rock-cut tunnel diverting mountain floods from harbour – 7 m high
36.1210° N · 35.9180° EOuter Harbour Mole Base
moleOuter mole base at –1 m offshore – rubble mole foot 200 m
36.1169° N · 35.9269° E
Gallery