Hey guys! First off, I searched and nothing came up. I'm also sorry that I cannot get a picture for you, but Ill try to explain as best I can!
When in the horde flag room, next to the flag, there is this little room thing (under the balcony) where usually hunters and others like to hide. (Just to help be more discriptive, its the one where it has a see through wall facing the tunnel, so you can see people comming). Well, this see through fabric is held between four logs (in a square, like a window) and if you jump onto the bottom log, you can mount! ^.^ This is totally useless, but I thought it looks kinda weird and funny, plus if you lag a little, you can run on your mount inside of the base for a little before you get dismounted!
Thanks!