Two workers have been detained in northern China after local authorities said they plowed through a section of the country’s Great Wall with an excavator, leaving a gaping hole. The pair, a 38-year-old man and 55-year-old-woman, caused “irreversible damage” when they used the construction equipment to widen an existing gap and create a shortcut that was large enough to drive the excavator through it, the Youyu County Public Security Bureau said in a news release last week. The security bureau said it was first notified of the hole in a…