🇱🇾 Libya · Ancient city
Hadrianopolis (Driana) North Extramural Dunes
Roman to Byzantine (2nd–7th c. CE) · Roman (Cyrenaica)
Dune suburb of Hadrianopolis with fish vats and submerged mole.
🇱🇾 Libya · Ancient port
Phycus Naustathmus (Zawiyat Hamama)
Archaic Greek to Byzantine (6th c. BCE–7th c. CE) · Greek (Cyrenean) / Roman
Rock-cut shipsheds and breakwater on Phycus headland north of Cyrene.
🇱🇾 Libya · Submerged site
Ptolemais – Sunken Harbour of the Cyrenaican Pentapolis, Tolmeita
Hellenistic to Early Islamic (247 BCE – 642 CE) · Greek Ptolemaic / Roman / Byzantine
Ptolemy III foundation 247 BCE — Pentapolis harbour drowned 2 m off Tolmeita with 100 m breakwater and 6,000 m³ cisterns.