WoW Vanilla hidden ironforge room

Incredibly cringy video of the hidden room behind the door show in the video (inside the throne room) of Ironforge.
I couldn't capture the method of getting in as I was limited by 30sec fraps recording (this was 13 years ago).
I do remember how to get in though ;) Might try it out in Classic (the release is what got me to dig this video out)