Looks like it is some kind of cavern.
So when was “the period between about 2,000 B.P. and 900 B.P.?”
B.C. & A.D. have been destroyed by anti-Christian political correctness and was replaced by “BCE” and “CE” Now do we have a new time, and when is the base year? I figure some one will declare it is the number of years before today, thus having an ever shifting date for things in the past.
early in the article:
“During the period between about 2,000 B.P. and 900 B.P., the climate in the area became increasingly wet, creating conditions that made it increasingly difficult for the early farmers”
later.....:
“Says Pryor, “its drying out, partly because of climate change and partly because of modern development. “
Somehow it was lost that climate change caused the causeway (no pun intended) to be built in the first place. It was ok that conditions changed back when, but now, the term “climate change” has these sinister overtones. Exhausting.