No, they incinerated the bodies then disturbed a bunch of land- predicting that decades later there'd be a technology to detect that but not advanced enough to differentiate between gardening and dead bodies.
"We know that there are bodies because we saw some fuzzy splotches in this ground penetrating scanner thing, but when we dig them up the bodies aren't where they're supposed to be because the evil white man incinerated them instead of giving them proper burials."
No, they incinerated the bodies then disturbed a bunch of land- predicting that decades later there'd be a technology to detect that but not advanced enough to differentiate between gardening and dead bodies.
Crafty white devils...
Your hypothesis makes more sense than theirs.
"We know that there are bodies because we saw some fuzzy splotches in this ground penetrating scanner thing, but when we dig them up the bodies aren't where they're supposed to be because the evil white man incinerated them instead of giving them proper burials."