Porthmion — Chushka Spit Harbour at Chushka North (Kerch Strait Chushka) — v2
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) — v2
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