Archaeological discoveries show the existence of a populace dating back to the 1st century BC. Najaf possesses one of the largest burial grounds in the vicinity for Christians. The centuries following have proven this to also be a city with a multicultural and religious people. Mohammed al-Mayali, director of Inspectorate Effects of the province of Najaf, states "the excavation on the graves, which we have been working on for years, confirm that "Najaf" contains the largest Christian cemetery in Iraq, with a cemetery area of 1416 acres. We have found indications of Christianity on the graves through representations of crosses and stones with Christ-like engravings. There are also relics that date back to the Sassanid period. Also discovered in the excavation was proof of a thriving glass industry. Pots were decorated with the cross. as well as Hebrew writings, indicating a community of religious coexistence."