A 2,500-year-old mummy has just been unearthed in Egypt from a cemetery lost for millennia—could it hold clues to the untold secrets of the ancient world?

Egypt recently exposed the 2,500-year-old mummy of a high priest at an ancient cemetery in Cairo’s southern neighborhood.

Egyptologist Zahi Hawass, along with a team from Egypt, opened three sarcophagi that had been sealed during the 26th Dynasty.

One of the coffins held the well-preserved mummy of a powerful priest, which was decorated with a golden figure depicting Isis, an ancient Egyptian goddess. The mummy was wrapped in linen and decorated with the figure.

The team also opened two other sarcophagi, one containing a female mummy decorated with blue beads and another with a father in a family tomb.

The finds were revealed live on air on the Discovery Channel on Sunday.

At the burial site in Minya province, the team also found a rare wax head.

“I never discovered in the late period anything like this,” Hawass said.

Egyptian archaeologists discovered the site a year and a half ago and the excavation is continuing.”

I really believe that this site needs excavation maybe for the coming 50 years,”

Hawass told Reuters a day before the sarcophagi were opened. He expects more tombs to be found there.

In 1927, a huge limestone sarcophagus was found in the area and placed in the Egyptian Museum in Cairo, but the site was then forgotten, Hawass said.

But two years ago an unauthorized digger was found at the site and stopped, he said. That’s what alerted archaeologists and excavation began.