A 1,300-year-old mummy found in Sudan was hiding an angelic secret, which has now been revealed by CT scans done by researchers at the British Museum.

The naturally-preserved remains of a Sudanese woman were excavated in 2005, but new investigations have revealed a tattoo located on her inner thigh which symbolizes the Archangel Michael, according to Live Science.

The woman is believed to have been between 20 and 35 years of age when she died, and was buried simply, wrapped in linen and woolen cloth. The hot, dry climate naturally preserved her body.

The letters on her inner thigh spell out M-I-X-A-H-A, which is “Michael” in ancient Greek. Researchers say that she probably died around AD 700 and lived in a Christian community on the banks of the Nile River.

Via Huffington Post.