“It’s bigger on the inside…” Perhaps liminal horror is about spaces that should not be and that make no sense. A long corridor is creepy; a corridor that seems infinitely long is deeply unsettling. H.P. Lovecraft wrote about spaces with non-Euclidean geometry just as he referred to impossible colours. https://precastreinforced.co.uk/2026/06/03/12-thoughts-about-liminal-horror/