Basicly if you are any were in Dreanor and you que for a dungeon and then with out leaving the dungion group use your garrison hearthstone you can access your garrison and then surrounding areas / teleporting away and as soon as you leave the dungeon group you will return to your original location
Simple guide:
>Start in teleport location
>Enter Dungeon Finder
>Complete Dungeon (Might not be necessary)
>DON'T Leave dungeon group
>use Garrison Hearthstone
>Explore what ever
>Leave Dungeon Group
>automatic teleport back to original location
This can help you get back to questing locations or if you want to keep an eye on a rare spawn.