Each continent has predefined locations were battles take place based on your current location. While visiting Northrend you will never battle on location in Kalimdor and so on.
Since Deepholm is an instanced zone, relatively small, it has only one predefined location.
All you have to do is visit given coordinates. From now on you will never get a loading bar. It may be of use if your machine is slow. Helpful if you are botting your way towards 5000 wins achievement.