ABSTRACT
While in the past going to ground was a way of surviving, of seeking protection from the elements, of choosing the earth as a roof under which to live rather than a surface on which to tread, with the advent of the industrial revolution the underground universe has coincided with the concept of mobility. The belly of Paris, as well as other capitals, began to contain not just immense sewer systems, but also entire underground rail lines. In this way, the substrate has wound up taking on different forms and meanings. An image, that of the cryptal architecture, fed as can be seen by mythology, literature, comics and other expressions of a narrative character, like cinema.
