The following is a passage from "Mushroom Minutiae" (a fictional book of mushroom science quoted in "The Grim Grotto"): "The Grim Grotto, located in propinquity to Anwhistle Aquatics, has appropriately wraithlike nomenclature, with roots in Grecian mythology, as this conical cavern is fecund with what is perhaps the bugaboo of the entire mycological pantheon.