Archaeologists have uncovered a mass grave in the ancient city of Jerash, Jordan, offering rare insight into the devastating impact of the Justinianic Plague nearly 1,500 years ago. The grave is linked to the earliest documented pandemic in the Mediterranean, which struck urban populations between the sixth and eighth centuries of the common era. This discovery provides direct evidence of large-scale mortality in a major Byzantine city, shedding light on how the deadly outbreak shaped the region's history.