Archaeologists opened a tomb Thursday that was speculated to hold something important.<br />The black granite sarcophagus was discovered in Egypt earlier this month.<br />MNN reports some thought it could hold the remains of Alexander the Great.<br />Instead, it was holding raw sewage.<br />The 2,000-year-old sarcophagus was flooded with sewage from the roads 16 feet above.<br />Under the liquid was formerly-mummified skeletons of three individuals.<br />Officials say they believe the three were likely military leaders. <br />