byzantine, labyrinthian, convoluted, arcane, mazelike, tortuous, kafkaesque, intricate, purgatorial, recondite, rabbit warren, bureaucratic, complicated, bewildering, subterranean, abstruse, serpentine, opaque, circuitous, multilayered, confusing, murkiest, complex, torturous, stygian, interminable, inscrutable, muddled, dantean, shadowy, esoteric, overdetermined, oneiric, unwieldy, chaotic, dizzying, laborious, cobwebbed, dank, backstairs, foetid, dense, sisyphean, tedious, jumbled, impenetrable, cumbersome, knotty, haphazard, twilit, miasmic, squalid, cavelike, cobbled, hellish, creaky, eldritch, fin de siecle, musty, maddening, sinuous, vertiginous, ramified, tenebrous, tentacular, dauntingly, cluttered, grimy, digressive, balconied, phantasmagoric, obtuse, slapdash, pathless, stultifying, overstuffed, arcaded, cacophonous, crazy quilt, spaghetti junction, undecipherable, etiolated, structureless, sclerotic, twisty, tricksy, lightless, baroque, backstreet, dankest, cobblestoned, perilous, rube goldberg, untrodden, ponderous, obscure, overfamiliar, seriocomic, dusty, ramshackle, indecipherable, nightmarish, reflexes, visceral, cerebral, tactile, vascular, cortical, dis, eps, floral, frontal, glandular, im, infrared, inhibitory, mazes, photoreceptors, proximal, sensitivity, stimulations, ultraviolet, vestibular, extrapyramidal, circulatory, irritative, encephalic, nervous, ocular, sphincteric, alimentary, autonomic, bronchopulmonary, neurovascular, ejaculatory

membranous labyrinth, vestibular apparatus, vestibular system

byzantine, complex, convoluted, intricate, involved, knotty, labyrinthian, mazy, tangled, tortuous