CanyonAg77 said:
Sounds like the "mass graves" of the Tulsa Race Riot.
Ground penetrating radar and other tools such as seismic can do wonderful things to help locate anomalies in the ground.
But you still have to dig or drill. And if there is nothing there, your interpretation is at fault.
And here is the kicker. Now that everyone assumes it is a mass grave the indigenous people have called it a sacred burial site and won't allow anyone to excavate there to confirm it.