Dark hallways like this one shed new light on the phrase “light at the end of the tunnel.” This particular hallway located in the basement of Building 10 is noteworthy for this effect because of the relatively low height of its ceiling, small effective width from the presence of storage cages, and bright lights at its far end.The Infinite Corridor is occasionally closed for floor waxing at night; a way to get across campus at such times without leaving the warmth of MIT’s indoors is to go down one floor and use the basement.