Note: "Blackened and warped by the volcanic event, the roughly 1,800 scrolls found so far have been a challenge to read. Some could be mechanically unrolled, but hundreds remain too fragile to make the attempt, looking like nothing more than clubs of charcoal. Now, more than 200 years later [after the scrolls' discovery in 1752], archaeologists examining two of the scrolls have found a way to peer inside them with x-rays and read text that has been lost since antiquity." Source: The Smithsonian.
Related: Reading The Unreadable.