I remember a variety of visual BG development for The Black Cauldron. This beautiful Bg is by Ron Dias. It represent a throwback to old classic Disney, very romantic, and also well executed.
Gosh, you wonder what this movie could have been.
To me the film's problems lies with the insufficient story telling as well as character animation on a high school level.
Fortunately better movies would follow, and eventually we were on a roll with animated films that resonated with modern audiences.
Yet, I do love this Dias BG.