The size comparison of the Amazon women to the crew keeps changing from the crew being only up to their knees to the crew being almost as tall as the amazons. This changes throughout the show.
When Amy runs into the femputer cave with Kif the smoke from the femputer jerks and then freezes.
Many of the Amazon women appear dark-skinned as if they possibly come from South America. This is a common mistake with Amazonions whom are traditionally (if not mythically) from the Black Sea area of eastern Europe.