Just a cool story from the UK Telegraph (h/t: Twitter user @lamblock):
Scientists used advanced laser technology to remove a hardened crust of dirt and calcium deposits in order to bring to light the brightly coloured 4th century paintings of Saints John, Paul, Andrew and Peter.
The images adorn the ceiling of a vault, carved out of volcanic rock, which provided the last resting place of a rich Roman noblewoman who converted to Christianity after it was declared legal by the Emperor Constantine.
Archeologists also found an early image of Christ, a painting of a naked Daniel with lions at his feet and a sketch of Jesus raising Lazarus, wrapped in mummy-like white bandages, from the dead.
Click the link above to read the rest of the story and see a couple of pictures associated with it.