Out of bounds
White stakes mark the out of bounds line along the right hand side of this hole and in front of the Clubhouse. If your ball goes out of bounds, you must play another ball, from the same place, taking a penalty. For example, if it was your third shot that went out of bounds, you will now be playing shot five (rule 27-1b).
Occasionally, your ball may come to rest in an area where you are not sure if is out of bounds or not.
Determining if a ball is out of bounds (Rules of Golf: definitions page 31)
Both of the balls in the photographs below are out of bounds.
Note; you do not get relief from posts that mark the boundary of the course. You cannot, therefore, remove a white stake if is interfering with your stroke or the line you want to play down. Any drop you choose to take will be under penalty.