Hey guys, this may have been posted before so flame ahead! I don't really care I found it myself so I'm proud lol.
http://i48.photobucket.com/albums/f211/lordhenry/1.jpg
http://i48.photobucket.com/albums/f211/lordhenry/2.jpg
http://i48.photobucket.com/albums/f211/lordhenry/3.jpg
http://i48.photobucket.com/albums/f211/lordhenry/5.jpg
Anyway you need to be under sw but there's heaps of guides here on how to do so I won't post one. Just go through the gap in the terrain texture and fall into the bottomless hole. You can't hearth or teleport to moonglade and since you did it on purpose it may not be a good idea to talk to a GM about it. What I did to escape was get someone to summon me to an instance.