I'm trying to do 25 "Lessons" for the Wisdom of the Witch Triumph, one patrol that shows the way to a lesson from Divalian Mists that goes to the left bridge from the castle at Spine of Keres and then it goes up the stairs to the right side of the bridge and then when I go trough the spires to the left the marker shows that the lesson is under me. I then jump under the bridge where enemies are, but then the marker shows back up to the bridge. I've been trying to look for any secret entrees in between, but there is nothing.