1.Go into the basmement.
2.Go down right hall.
3.Stand in front of Fire Bowser picture.
4.Turn right and go to the 2nd door.The one without the star.
5.Go thru and swim down the water hole.
6.Go to the two pillars and in turn, jump on them.
7.Last you jump and hit R three times on each.Both should move down and release water from moat.