 The ice floe sequence was shot on what is now known as Warner Bros.  Sound Stage 16, the biggest and tallest sound stage on the Warner  Bros. studio lot. Originally, in the early days of the studio, it  was known as Stage 7. If you look closely at the water that  surrounds the actors and the automobiles on the slab of ice, you can  see a multitude of reflections from the lights on the stages  catwalks. Stage 16 was originally a standard