I dont know how i glitched out of the map, but i found a way behind the cart in burrwitch. Behind there is a whole new area called the Burrwitch Slums, Broken Teeth, and more, completely fleshed out and ripe with many enemies. And the strangest thing of all is the random heroic chest. Can any dev answer why it is out there, or why there is a whole area of Burrwitch filled with enemies and completely fleshed out that we cannot enter?http://imgur.com/Lx02Zz2
Hmm where is this exactly? Far north east corner? I need to try and ninja my way in
An inside look into the expansion of Burrwitch…
Basically its northeast, but there are many invisible walls to get past and its past another new area called Prospect Hill, there is a row of jagged rocks, probably why it is called Broken Teeth, and a waterfall too. Here is another screenshot, this one is out of the map, as you can see the place is so freaking huge it doesnt even fit on one screenshot. http://imgur.com/oxRFRlo
I downloaded the GD trainer in hopes of a noclip type cheat and there is warp to cursor destination I couldn’t figure out how the hell to get back there on my own, not sure what you did to get back there 
A lot of the area is devoid of enemies, has bugged terrain, some of it is barren, etc but it’s still pretty cool to go back there. I found area in particular I thought was pretty neat! Makes me wonder what else is hidden in this game. Might have to take a night to run around Cairn with this trainer and see what I can find
Be a tourist… Take pictures!
Alright Bout to play a few league o legends games with some friends, but I will snap some pics later tonight or tomorrow morning