How did jason get across the ithsmus between the Aegean Sea & the Black Sea to get to Colchis?
Answer Hi, first of all between the Aegean Sea & the Black Sea there was NO ISTHMUS and then Jason, the legendary Greek hero and leader of the Argonauts who sailed to Colchis in the ship Argo to seize the Golden Fleece, did not pass through any isthmus, as we read in many ancient authors from Homer (9th-8th.century BC) to Apollodorus (fl. 2d cent. BC.), for example. Jason in fact passed through the strait of Hellespont (today Dardanelles) which linked (and links still today) the Aegean Sea with the Propontis (today known as the Sea of Marmara), and then through the strait of Bosporus or Bosphorus ( today also known as the Istanbul Strait) which linked (and links still today) the Sea of Marmara with the Black Sea. As for your question about the island of Thera /Thira (formerly Santorini) which could be Atlantis, the legendary sunken island described by Plato in his dialogues Timaeus and Critias, this is a real vexata quaestio as we say in Latin, i.e. a disputed question the scholars fin