🇹🇷 Turkey · Submerged site
Heraclea Pontica – Megarian Black Sea Harbour at Karadeniz Ereğli
Archaic to Ottoman (560 BCE – 1923 CE) · Megarian / Boeotian / Pontic Greek / Roman / Genoese
Megarian coal port 560 BCE — 110 m ashlar mole at −2 m off Ereğli with Heracles Acherusian cave above harbour where triremes wintered.