This finally sounds like the user interface used in Jurassic Park, which I recall was actually a real thing. Which all in all is funny to me for unexplainable reasons.
Fsn: an experimental application
to view a file system in 3D
https://en.wikipedia.org/wiki/FsnThese work on modern systems:
https://github.com/mcuelenaere/fsv
https://github.com/3dfsb-dev/3dfsb