What associations are there between the setting for Act 5 scene 1 and the predictions of the apparitions in Act4 scene 1?

The main association between the setting in Act 5 and the predictions in Act 4 is that in Act 4 the withches predict that Macbeth will not die until Birnham Wood moves up to "high Dunsinane hill.  Act V opens in an anteroom in the castle on Dunsinane Hill just above Great Birnham Wood.  The prophesy will be fulfilled when Malcom orders his men to cut down boughs of trees in Birnham Wod to use as camoflage as they move up the Hill.