A team of historians, paleontologists and biologists affiliated with institutions across Spain has discovered that a box of artifacts donated to a museum in Spain back in 1986 contained a treasure trove of Neanderthal bones. In their paper published in the journal Frontiers in Earth Science, the group describes the history of the bones, how they turned up at a museum and what the group has learned about the objects so far.
Wtf, someone just had a bunch of bones in their attic or something? Like, arguably human bones?
Museum storage, it can be a bit of a black hole due to lack of funding. It takes a non-trivial amount of money and effort to digitise collections.