I heard that in the area where that guy found the human clay crossroads, was on some sort of preserved site where digging was illegal
If anyone has a copy of that interview where he "spilled the beans" let me know. They still say though that they will take to their graves what you can hear behind Ode, which some ppl have investigated and came up with some cordinates.
There use to be a great site for this stuff, but it's closed now
, luckily though, I already printed its contents.