Scala comes with a very large collection of tunings. Many of these are mysterious to me. Specifically, I'm seeking information about these two:

pyramid_down.scl               12  Upside-Down Wedding Cake (divorce cake) 
t-side2.scl                    12  Tau-on-Side opposite

I'll take anything I can get at this point -- historical information about who made them and why, technical / mathematical information about how they're constructed, examples of their use in music etc.

Incidentally, I have no reason to believe these are related, they just stood out to me when I was exploring the collection. I'm currently using them both in a piece of music so I'd like to be able to say something about them when asked (or even when nobody asks).