I am sure everyone knows how to get ontop of orgrimmar using the passage west of the gates. To walk up and get literally ontop of the gates. But once you get there if you go West just a tad bit you will see a tree very high up. North of the Tree is just a vast of nothingness and if you jump into it you will land in orgrimmar. But (works great for hunters) if you fall in a specific spot you will not fall, but land on the sides of orgrimmar. If you are a hunter you can Use eyes of the beat and make your pet fall sevral times until you find the specifc spot. Sometimes its hard to land on. once you get there you can walk all along orgrimmar. YOu can get on top of Those towers near the west entrance. Or just explore for your own benifit. Much fun and i encourage you to try.