This is truly mind blowing:

French archaeologists have taken pottery from ancient Pompeii and
played the grooves back like a record to get the sounds of the
pottery workshop, including laughter. Click "Telecharger la video" to
play the short video which contains a sample of the audio.

http://www.zalea.org/article.php3?id_article=496

Sounds from 70 AD recovered from the hardened clay of an ancient vase!! Wow!! What else is out there in the clay of the centuries?

A