Roman engineers chipped an aqueduct through more than 100 kilometers of stone to connect water to cities in the ancient province of Syria. The monumental effort took more than a century, says the German researcher who discovered it.
From later on in the article…..
“Amazing” is the word that the researcher uses to describe the achievement of the construction crews, who were most likely legionnaires. The soldiers chiseled over 600,000 cubic meters of stone from the ground — or the equivalent of one-quarter of the Great Pyramid of Cheops. This colossal waterworks project supplied the great cities of the “Decapolis” — a league originally consisting of 10 ancient communities — with spring water. The aqueduct ended in Gadara, a city with a population of approximately 50,000. According to the Bible, this is where Jesus exorcized demons and chased them into a herd of pigs.
I am skeptical about the 100 year figure. They seem to have a good idea of when this project started. But reading between the lines, I don’t think they have that good of an idea of when it ended.