Kael bank ramp pathing / Drakel Wolves nearby
 

If you pull mobs around the bend from the bank, up towards the Tormax ramp the mobs will clip thru the wall and then begin to re-path thru the bank adding / aggroing more mobs. As a bonus in the same area, the wolves down below the ramp have an enormous aggro radius almost to the point of being in LOS on the ramp to them will net you aggroing at least 3-4 wolves.