🇬🇷 Greece · Submerged site
Atalante (Opus) – Sunken Lokrian City after 426 BCE Earthquake
Mycenaean to Late Roman (Opus Mycenaean – 426 BCE drown) · Locrian Greek / Mycenaean / Classical
426 BCE quake drowned Lokrian Opus — harbour mole and isthmus now 3–4 m down off Atalanti island.