The mysteries of Underfoal

Yes, darling. lift me higher to the next mural ! I think this one
has some clue… hummm… Nope. Just another crystal pattern of…
wait… Oh my Celestia ! this is no decoration ! this is a language !

Pencil doodle on A6 sketchbook
Excerpt from the “Festival of lights” campaign supplement from “Tails of Equestria” RPG