i've been out and about the university on bocks as late/early as 1am, it's quite dark in teh dark corners round all teh steps etc, just need to be careful and know your surroundings well enough, or take a more sensible routte round, like walking over to the concreted hill, instead of cutting throught he middle and meeting a 20 foot wide set of stairs that are bad enough in the light
...it's strange at night, it's all there, jsut looks slightly different