labyrinth
/ˈla-bə-ˌrin(t)th/
noun
a place constructed of or full of intricate passageways and blind alleys
a maze (as in a garden) formed by paths separated by high hedges
something extremely complex or tortuous in structure, arrangement, or character : intricacy, perplexity
a complex labyrinth of tunnels and chambers
noun
the sensory structures of the inner ear