ROME—Archaeologists have unearthed a unique ancient-Roman ceremonial carriage from a villa just outside Pompeii, the city buried in a volcanic eruption in 79 AD. The almost perfectly preserved four-wheeled carriage made of iron, bronze, and tin was found near the stables of an ancient villa at Civita Giuliana, around 700 metres (765 yards) north of the walls of ancient Pompeii. Massimo Osanna, the outgoing director of the Pompeii archaeological site, said the carriage was the first of its kind discovered in the area, which had so far yielded functional vehicles used for transport and work, but not for ceremonies. “This is an extraordinary discovery that advances our understanding of the ancient world,” Osanna said, adding that the carriage would have “accompanied festive moments for the community, [such as] parades and processions.” The culture ministry called it “a unique find, without any precedent in Italy.” Pompeii, 23 kilometers (14 miles) southeast …