You are at the ground level looking West at the East side of the castle.  This is a lovely picture form Helen Roe taken in 1979.  You can see the low structure to the right which, apparently sound here, has been removed for some reason.  You can see an entrance directly in front of you.

You can go forward to the entrance. You can go left around the building and right back the way you came.  You can't go back as there are farm building and this memorial is adjacent to a working farm.