"Is this like finding the backup tapes for the lost library at Alexandria?"
That's what some folks seem to think. I never read the MSM anymore, but so far I've only read about this on a couple of threads here. But it is pretty interesting.
I kind of doubt it's going to change the history of the world.
It could be anything from a vast collection of pornography to all the lost works of the ancient Greek masters that we only know about from later writers making references to them.