In the Labyrinth (French: Dans le labyrinthe) was a groundbreaking multi-screen presentation at the Labyrinth pavilion at Expo 67 in Montreal, Quebec, Canada. It used 35mm and 70mm film projected simultaneously on multiple screens and was the precursor of today's IMAX format. In the Labyrinth was co-directed by Roman Kroitor, Colin Low and Hugh O'Connor and produced by the National Film Board of Canada. Kroitor left the NFB shortly after to co-found Multi-Screen Corporation, which later became IMAX Corporation. NFB animator Ryan Larkin also designed animated sequences for the film.