You are at the ground level looking North at the South face of the Castle.  There is a large doorway in front of you with the SW tower on the left of that entrance.   There are two little square 'lights' windows to the right of the entrance.

You can go forward in through the large entrance.  You can go left between the farm building and the castle, through the overgrown vegetation, and right to the corner view.  You can't go back because of the farm buildings.