Fire Tower Glitch

I found this cool glitch with my cousin in the Fire Tower in Ravenwood. Here is how to do it:
Step 1: Go into fire tower (Obviously.)
Step 2: Walk in front of the fire shield (Not the one with the brazier blocking it.)

Step 3: Start running into it (I suggest pressing number lock so that you keep running)

And then, your on the wall of the Fire Tower!