Turn right.

You walk down a dark passage, until you suddenly fall into a large cavern.  Flickering lights dance upon a flat smooth wall, displaying images so fast they blur into a ghastly single image, giving movement and life to what was once lifeless.

You sit, broken and heaped, and watch the images spasm, mimicking a living thing, entranced.

It is too late, as you realise, you are no longer lying upon the cavern floor; you are one with the moving pictures, trapped forever.