After I found this way I realized another way for anyone to do this so I'll edit it in.

If you are not a Hunter that is skilled with Disengage dismiss the first screenshot and explanation.

To get where I am at this first screenshot or two you have to be a Hunter. The part where I am is at the end of the room that is infamous for Leeroy Jenkins. What I did was jump on the little bonfire you can see and then onto the ledge next to it. From there I got as close as I could to the edge and Disengaged backwards to where I am standing.



If you are not a Hunter, the simplest explanation for this is when you zone into Blackrock Spire, clear the lower part where the small bridge is. Take the second right there and you'll see a drop with the standard in the ground. Go ahead and jump down now.



If you followed the other steps correctly you should be in this little room at the bottom with the standard.



If you go to the right (only way to go, left is a wall) you should see this, which looks like the "end of the world" at Wetlands Farm.



Jump out if you wish, after a while you just die.