Spaces that are literally kept in the dark have always been a substantial section of the public landscape of the city. Rarely these spaces are specifically designed or conceptualised, they most often simply exist: a space is left over barely lit, after which it might filed with rubbish or overgrown with weeds and brushes or even used by citadins in unexpected, unexplored ways. This of course is part of a Romantic idea of the city, implying that there are places to where escape or in which to hide in plain sight. Where are these spaces in your city, do they actually exist? Can we visualise them and can we be precise in describing and documenting them?