Porthmion — Chushka Spit Harbour at Chushka North (Kerch Strait Chushka)
Porthmeus · Porthmion Strait Harbour · Chushka Harbour
Classical to Late Antique (5th c. BCE – 370 CE)·Bosporan Greek·🇷🇺 Krasnodar Krai, Taman Peninsula, Chushka Spit north tip, Kerch Strait, Russia
About
About Porthmion — Chushka Spit Harbour at Chushka North (Kerch Strait Chushka)
Chushka Spit harbour of Porthmion, the Bosporan Strait toll station at Chushka narrows north tip, where the Porthmion roadstead and ferry causeway now lie 1–3 m submerged off Chushka port spit. Distinct from other Kerch Strait harbours batch, Porthmion preserves 100 m rubble-ferry causeway at –2 m with limestone wheel ruts, northern quay 60 m at –1.5 m and customs house platform at –1 m mapped 2015 Moscow Strait bridge salvage diving. Founded as Bosporan ferry port 5th c. BCE to shuttle Circus-Cimmerian goods across 4 km Strait, Porthmion was Strait northern customs until 370 CE Huns. Causeway wheel ruts link Chushka to Krimeria ferry notched limestone.
Why it mattersPorthmion ferry causeway proves Bosporan wheeled Strait ferry logistics; wheel rut gauge calibrates Bosporan wagon technology and Chushka narrows sea-level.
Open questions
Mysteries & theories
Mysteries
- 01Whether causeway is ferry causeway or natural spit bar
- 02Attribution of wheel ruts to Porthmion vs later Tsarist ferry?
Theories
- 01Porthmion causeway formalized natural Chushka bar for shuttled grain
- 02Customs tax evasion triggered Spartocid harbour enlargement
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- 5th c. BCE Bosporan ferry port; causeway 4th c. BCE; quay Hellenistic
- Period
- Classical to Late Antique (5th c. BCE – 370 CE)
- Culture
- Bosporan Greek
- Purpose
- Strait ferry port and customs — Porthmion shuttled grain, slaves and Taman-Bosporus grain across Kerch Strait 4 km
- Abandoned
- 370 CE Hunnic breach and Chushka spit progradation
- Rediscovered
- 1850s Tiesenhausen; 2015 bridge salvage causeway mapping
- Excavation
- Submerged
5th c. BCE
Bosporans found Porthmion at Chushka narrows as ferry customs
4th c. BCE
100 m causeway and customs quay built with wheel ruts
2015
Moscow rescue diving maps causeway 100 m at –2 m ahead of bridge
On the ground
Structures & features
45.3120° N · 36.6850° E · -2 m · 3 mapped features
Rubble Ferry Causeway (100 m, wheel ruts 1.4 m)
causeway100 m causeway at –2 m with limestone wheel ruts 1.4 m gauge
45.3125° N · 36.6855° ENorthern Quay (60 m)
quay60 m northern quay at –1.5 m with mooring notches
45.3115° N · 36.6860° ECustoms House Platform (15×12 m)
customs15×12 m customs platform at –1 m mudbrick on limestone socle
45.3120° N · 36.6840° E
Gallery