By the way, a cautionary tale
If you find a bunch of bones that are A: untouched and B: supernaturally clean, there is definitely a reason for both of those things. Sometimes that reason is ants. Sometimes those ants are fire ants. Sometimes those fire ants have made a nest over the entire three meter area around those bones
Sounds like someone had an adventure with fire ants
OP has my deepest sympathy. I’ve been there.