Secret room in PoM?

[ZiggyTheMuss]

Wonder if anyone knows what the purpose of this is and possibly if one can get there somehow.

if you are in the basement and you are shrunken or in a gnome illusion you can look through the walls and see this tiny little room separate from everything else deep below the basement. there appears to be an elf warrior pictured on the wall in this room as well as some kind of message written on the wall but it's too far to read. anyone know what this is and if one can get there?

Maybe Kraddok should investigate?