I've have read comments similar to yours before, and unfortunately I could not find a source. I do, however, remember that those comments were related to that

I've have read comments similar to yours before, and unfortunately I could not find a source. I do, however, remember that those comments were related to that time when digging a tunnel for a high-speed train in Istanbul uncovered important shipwrecks. As the article puts it, "The excavators, attempting to avoid traces of Istanbul’s human history, had ended up finding an extra five thousand years of it". https://www.newyorker.com/magazine/2015/08/31/the-big-dig https://www.newyorker.com/magazine/2015/08/31/the-big-dig