To dig out of the ground; to take out of a place of burial; to disinter.
dig up for reburial or for medical investigation; of dead bodies
To dig up human remains, possibly for medical or legal investigation.
To dig up the remains; to remove from the place of burial.
To disinter, excavate, reveal or restore. Used in the book to refer to geologic structures buried by glacial debris and subsequently revealed again by weathering and erosion.