The marble slab on which it is believed that Jesus lay after his Crucifixion is being studied as part of a $4 million restoration project at the Church of the Holy Sepulchre in Jerusalem.

According to the National Geographic, a partner in the project, the tomb, situated inside the Edicule in the Old City, has been exposed for the first time in centuries so that a team of specialists from the National Technical University in Athens can continue their work.

Archaeologist Fredrik Hiebert told the magazine: “The marble covering of the tomb has been pulled back and we were surprised by the amount of fill material beneath it.