I will write this for public info, since lead I wrote you a little about it.
cemetary was US 36 west beyond warsaw, toward nellie on right, best on my calculations it was on top the cliff like hill on the curve. a large farm was on the left going west, and a camp ground before that...past the bus driver's place Ann Mcgrady, I think she has passed away....., but its in that area.
It was a hollowed out area from rock that was believed to be used by the prehistoric indians for I believe ceremonial type use.