Was messing around in AB when i noticed a Stonehenge like set of stones far into the distant mountains. With my walljumping skillz and persistance i managed to jump my way there.
Nothing groundbreaking, but enjoy anyway =P
And this is just a screen of where it's located in AB
-Xaxiz
EDIT: Also from there you can walk a little closer to the Alliance Base and Slow Fall down towards the Stables Building, just as your above it blink and you will land on it and be in the position to Blizzard, Arcane Missile etc the people below as the same time as being out of their LoS. (Mage only obviously).