What burial method requires digging up skeletal remains and was the subject of a 2007 documentary?
Jesus bloodline:  The 2007 documentary "The Lost Tomb of Jesus" proposed that evidence existed to show that Jesus was married to Mary Magdalene and that their son was named Judah, based upon inscriptions found on ossuaries discovered in Jerusalem in 1980. Ossuary: An ossuary is a chest, box, building, well, or site made to serve as the final resting place of human skeletal remains. Ossuary:  A body is first buried in a temporary grave, then after some years the skeletal remains are removed and placed in an ossuary.
An ossuary