Since the one in Dellion's TUSOTW doesn't work anymore (he uses a walljump then a growth through wall, and since now you have to D/C to growth, you fall from the walljump spot when you reconnect), I went looking for another spot and found this.
[4.3] Outside Shadowfang Keep - YouTube
I'd like to know if any of you are able to explore out there; i get ported outside the instance (like in the video) every time I move to much to look around, and since getting there is a tad bit tedious after about 20 fails I gave up.