Looking for the identity of a B-movie I saw many years ago when I was a little kid.Never seen it on TV since.?

.Believe it's in black and white.Probably the 50's.These three guys crash their plane or helicopter in the desert.They discover an ancient civilization beneath the desert.They kill one guy.Then in this ritual,they put his body on a pallet and dunk him in molten gold turning him into a life-size Oscar statue.