The most likely place to build such a canal was at the thinnest point of land: Panama.

VOA: special.2010.08.12

So fruitful is their land that they are spared the evil necessity of traveling on ships and there you have an interesting point about the Greeks.

他们的土地丰饶,这一切让他们远离了航行的厄运,这时你会发现关于希腊很有趣的一点

耶鲁公开课 - 古希腊历史简介课程节选