Go to whitebone sands to the very top left corner of it, you’ll see 2 main big trees.  Walk under them and they will let you through. Then you will come to a place where you’re stuck between a tree and the wall.

Sometimes it will work – just walk into the water. If it doesnt, turn your camera so it faces your character and lower it all the way to the ground. Now you should be able to walk in.

This might work for PC users, but has not been tested.  Can someone test it please?