The mysterious Tomb of the Warriors in Deir el Bahari, Egypt; was first discovered in 1923, and then sealed. It has recently been re-excavated and dated to the close of the Old Kingdom, around 2150 B.C. Archaeologist Salima Ikram, from the American University in Cairo, led a team to examine the maze of tunnels which branched for about 200 feet (61 meters) into the cliff; chambers were filled with mummified body parts and piles of bandages that had once been wrapped around the corpses but had come unraveled.
About 60 bodies discovered all seemed to belong to men, and many showed signs of severe trauma; skulls were fractured or pierced, and arrows were embedded in many of the bodies,and injuries consistent with being hit by rocks from a slingshot, being struck by a mace, and arrows going through their bodies, suggesting the men died in battle. One of the mummies was wearing a protective gauntlet on its arm, such as those worn by archers. Eevidence suggests that they died during a period of social upheaval and civil war.
Mass graves of this type are extremely unusual for ancient Egyptians, they were traditionally buried alone or with close family.