🇷🇺 Russia · Submerged site
Porthmion — South Harbour at Chushka Spit South (Kerch Strait South Spit)
Archaic to Late Antique (580 BCE – 300 CE) · Milesian / Bosporan
Southern spit harbour of Porthmion on Chushka South — 55 m piled quay at –1.8 m and guard mole.