The book Cave System or Ear Canal isn't an extension of, or representation of, artist Halsey Rodman's art practice—it acts as an open exhibition space where Rodman's work explores and pushes the possibilities of creating transparent, functioning work within the book as an actual place. The book itself is structured as a repetitious outline. Cave System or Ear Canal includes an interview with Annette Wehrhahn and an index of images poster. The cover is risograph printed.