When i was fekking around today with my shadowstep i wanted to try get in an uninstanced SWP or something when i found out you can shadowstep true walls and get to the brutallus spot wich you fly over with bombing quest.
When i reached the point of Brutallus i jumped on a wall and fell under the isle and swp this is how you do it. Maybe also doable on a mage but did not test.
Follow instructions on pic
Shadowstep the mob i made red and you will be behind the wall.
Bit messy pic but before you hit here you see mobson the left on the grass at the waters edge take a mob and run to fire true the water get him behind the wall then SS.
Once behind that wall you can go right and you see you can go up here There is nothing there but a closed door (someone can get further?)
Jump down here and youll fall pretty deep. once ended you get in water and you can swim your way up to te top.
While falling down.
Hope its good for something just wanted to share
-L