^ That's what I was thinking, but wasn't totally sure. If that's the case though, I'm just gonna move this to Metal/Color. idc that FRLG has it, M/C could use some love. Anyway though, if we've misunderstood what you meant, just let me know and I'll move it back here, or to the appropriate place.
As for what's buried there...could be drugs. Magic beans. Souls of lost heroes. Elvis. I think one of the Channelers said it was some kind of spiritual thing though? So that would imply nothing's buried there and it's just an aura or some kind.