The one solace we can take is that modern techniques may let us read manuscripts after they have been largely destroyed.
> 9. The Books Under the Sand
> During the time of trans-Saharan trading, its strategic location along the caravan route enabled it to prosper. It was also the gathering place for the pilgrims from western Sahara as they began their journey to Mecca. It had already attained the position as a prestigious economic and spiritual center. Chinguetti was considered the capital of the "Land of the Moors".
In the episode, they reference and show a lot of very old texts. If I remember correctly, they mostly came from the days when the area was replete with trading activity, around the 12th or 13th century. One of the things they discuss in the episode is the fact that there aren't enough researchers/scientists that are studying them, so many of the books end up being inadvertently destroyed or buried under the always-shifting sands.
While I was watching the show, I remember thinking how awesome it would be to have some sort-of machine that you could point at the ground and be able to just see what's buried deep underfoot, for a wide radius. There's so much history in that area that is just completely inaccessible to us because of the climate and geography.
-Which reminds me of Joshua Hammer's brilliant book 'The Bad-Ass Librarians of Timbuktu', detailing the efforts to save those collections from the latest threat to them - islamic militants.
The title alone was enough to make me want to read the book, I'll admit.
https://cdli.ucla.edu/?q=news/machine-assisted-translation-c...
But neither do the people who might do something with it, which I guess is why there's little funding for such endeavors. You need somebody with the money and conviction to make the gamble.
https://www.smithsonianmag.com/history/buried-ash-vesuvius-s...
https://arxiv.org/abs/1706.09883
which is a newer paper using the same imaging method (X-ray phase-contrast tomography) plus an algorithm to separate the rolled-up layers from the 3D scan data. Results are better, though still far from being able to decode substantial portions of text.
edit: I also found an article in Smithsonian Magazine from just last month, about someone else's even more recent attempts:
https://www.smithsonianmag.com/history/buried-ash-vesuvius-s...
To quote Wikipedia: Since 1898 academics have puzzled together and transcribed over 5000 documents from what were originally hundreds of boxes of papyrus fragments the size of large cornflakes. This is thought to represent only 1 to 2 percent of what is estimated to be at least half a million papyri still remaining to be conserved, transcribed, deciphered and catalogued.
And that is just one find.
Or more likely to find out some shocking previously unknown heresy of some saints/popes I did not know anyway.
But more seriously, I think it is unlikely to find a sealed old libary somewhere, which was never mentioned anywhere. The best you can hope for are new scrolla here and there to maybe get new texts of Heraklit or alike, but that would be something. The detailed history of the cultures I am more interested at the moment, celtic druids for example, did not write down their knowledge. So it is unlikely that anything shows up in that regard.
Plinus reports that Pollio built the first public library in Rome around 30 BC. He was a patron of Virgil.
https://en.wikipedia.org/wiki/Gaius_Asinius_Pollio_(consul_4...
https://www.smithsonianmag.com/history/buried-ash-vesuvius-s...
My personal favorite would be to recover all of the texts by pre-Socratics.
Whenever I listen to history people talk about all the sources that have been lost, I dream that someday someone will uncover an ancient time capsule under their house and find a pristine collection of lost works that some wise person squirreled away for future generations.