Oh I get that, but I was just curious if they still had production/stage equipment in it from way back. There was a video of Adamthewoo going up into the catwalks at one of the former Nickelodeon Studios soundstages at Universal and there was still tons of old equipment with Nick logos on them from the early 1990s.
Sorry, it was actually a tribute on MartinsVids!
http://www.martinsvids.net/?p=789
At 54:28 it starts showing the construction of TSMM.
At 54:36 it says that the original tour corridor in Soundstage 2 was partially removed and walled off. It looks like theoretically you could still reach it (the dead end) through Soundstage 1, or go backwards through 4 and 3, if the walkways in those soundstages still exist.