vl_tone, (edited ) 
If you recently watched a 3h45 YouTube video about Super Mario 64 invisible walls you might be interested by this:
Here are the SM64 collision maps in .OBJ format for every area in the game, as extracted from Toad's Tool 64. Enjoy! :)
Download link: https://qubedstudios.rustedlogic.net/SM64_Levels_Collision_Maps_OBJ.zip