Helice hĕ´lĭsē [key] or Helike həlēkē [key], ancient city of Achaea, N Peloponnesus, near the mouth of the Selinous River, 20 mi (32 km) E of Pátrai. Noted for its sanctuary of Poseidon, Helice was a seat of the First Achaean League . It was destroyed by an earthquake and tsunami in 373 BC, a fate that is said to have influenced Plato's story of Atlantis . Its ruins and those of a 4,500-year-old Bronze Age settlement that met a similar fate were discovered in 2000 and 2001 respectively.
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