Euphorium

I'm not usually given to pursuing alluring young women down dark passages, but she did beckon. Suddenly, her long dark hair flicked as she turned, fixed me with her eyes and warned me that I was about to go on a journey of a hallucinogenic nature. Welcome to the pleasure dome from an "opium goddess".

All this in the name of Samuel Taylor Coleridge and the poem Kubla Khan, which he scribbled down after an opium-induced dream in 1797, and published as a "fragment" at Byron's insistence 19 years later. Euphorium, by San Francisco's Antenna Theatre (in collaboration with Soho Theatre), aims to recreate that famous experience as individual punters embark on a guided, dream-like tour of the labyrinthine undercroft of the former Victorian train shed.

Donning a digital audio player and helmet (it feels like taking a dive under water) the "audient", as artistic director Chris Hardman likes to call each explorer, is guided through a sensory maze, with smells of incense and an audio collage of snippets from Coleridge's fantasia, disembodied voices - at one point in Chinese to denote Kubla Khan's dynastic battles - electronic music and something that sounds like a radio dial being turned through the frequencies.

Through the helmet, a series of figures - devils, brightly coloured figures of a hellish nature, subterranean creatures and exotic buildings - slide through one's vision, all blurred by kaleidoscopic patterns. Time does indeed seem to stand still in this tentative 30-minute shuffle though the darkness.

I might not have quite experienced that legal high or euphoria - perhaps the visuals are a tad literal and don't quite match the fluidity and hypnotic nature of the soundtrack - but I certainly felt mellower on the Tube ride home (London Underground could learn something here) after this California-meets-Kubla Khan collision. Hey, cool dude that Coleridge.

? Showing at the Roundhouse Undercroft, NW1, until 20 October. Box office: 020 7960 4242.