Continuity mistake: The heels on Barbara's shoes appear and disappear throughout the movie.
Continuity mistake: Curved lines briefly appear on the soles of Barbara's shoes when she's kicking the ice stalagmites. (00:33:30)
Continuity mistake: When Barbara kicks the ice stalagmites loose, her right sock briefly disappears. Her left sock also briefly disappears when she kicked the ice stalagmites. (00:33:30)