 PLOT: When Robert and Sophie go to the Roslin church and go down to  the lower chamber, Marys Sarcophagus was supposed to have been  there at one time, yet it would have been impossible to get the huge  Sarcophagus down there through the narrow passage, unless the church  was built around it. If that is true, then how was the Sarcophagus  removed from the cellar of the church?