ok, so i thought it might be fun to walljump over azshara into orgrimmar. That proved much easier than i thought possible, infact i did it in 2-3 minutes =P
Anyways, i landed in the valley of honor up above the buildings on the ridge that borders around orgrimmar.
It appears that I can jump through a building and I land in this arena type building called the ring of valor.
Now call me a noob, but it doesnt appear any way in or out of the arena other than standing on this ledge and jumping through the building. However the place sounds very familiar to me.
I dont play horde so if this is a common place sorry for wasting your time, other wise i can post screenshots, and maybe even fraps it if you guys would like.