The Underground World is absolutely gorgeous. The animation has its issues, but how the animators light their characters and how director Kneitel composes the frames… just breathtaking.
The story concerns Lois and Clark on an expedition to an underground cavern. Once they arrive, there’s trouble for Lois and they discover the totally absurd secret of the cavern. But the absurdity doesn’t matter because the cartoon is so gorgeous. In fact, once Superman shows up in this silly situation, it just keeps getting more and more amazing. Kneitel outdoes himself every shot.
Joan Alexander probably has the most to do as Lois; she’s really good in World. Bud Collyer’s Clark is a little too nonplussed, but that describes Jay Morton’s characterization of Clark in general.
As the scientist leading the expedition, Jackson Beck is weak. He shouldn’t be so noticeably bad, but it comes through.
Ignore him though, World’s magnificent.