There's probably some kind of remarkable statement to be made here, about how it's a carbon-neutral film about monsters frozen in ice by climate change millions of years ago. Discursive wheels within wheels! Aren't we all just frozen bloodthirsty possum in the great permafrost of life? We look forward to a sequel, set millions of years in the future, when a race of super-evolved possums accidentally thaws out some bloodthirsty humans.