Location from Percy Jackson by Rick Riordan
Daedalus's maze — an underground network that shifts, expands, and drives people insane. It connects every major location in the mythological world.
Daedalus built the original Labyrinth to hold the Minotaur in ancient Crete. It grew. It kept growing, burrowing beneath continents, connecting impossible points in space, and developing a malicious intelligence of its own. By Percy's time, it stretched beneath the entire United States, connecting Camp Half-Blood to San Francisco to the Underworld. The walls shift when you're not looking, corridors rearrange themselves to trap explorers, and time moves differently in different sections. It drove most who entered it mad. Luke tried to use it to invade camp with Kronos's army. Daedalus destroyed it by dying, collapsing the maze tied to his life force.
An endless underground maze of stone corridors, traps, and impossible geometries. The walls shift when you're not looking. Every corridor looks the same. Time and space don't work correctly inside it. It drove most who entered it mad.
Also known as: the Labyrinth, Daedalus's maze