I have discovered a way to visit the Zandalari Island near Pandaria. To visit it, find the invisible wall leading to the island, place a Puntable Marmot behind the wall and then as fast as you can, right click the marmot before he falls to the bottom of the ocean and you will run straight through the wall, allowing you to fly to the island. Also, if you are a rogue you can simply Shadowstep the marmot.
From what i found there is 3 temple like structures, a mini village, some ruins and a lake.
Note that some areas of the island are extremely foggy.
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