living is so common that few even think of it as underground. Many shopping malls are partially or totally underground, in the sense that they are below grade. Though not as exotic as the other underground structures, those working in such urban underground structures are in fact living underground. Shaft structures. For example, Taisei Corporation proposed to build Alice City in Tokyo Japan. The project would incorporate a very wide and deep shaft, within which would be built levels for habitation, all looking in toward a hollow core topped with a huge skylight. Tunnels, including storm drains, are used by homeless people as shelter in large cities. In fiction Underground living has been a feature of fiction, such as the hobbit holes of the Shire as described in the stories of J. R. R. Tolkien and The Underground City by Jules Verne. Some films are almost entirely set underground, such as THX 1138. The Fallout series also has underground shelters called Vaults. The majority of the short science-fiction story "The Machine Stops" by British author E.M. Forster is set in an imagined underground city. See also Parent categories: : underground structures , umbrella article for underground dwellings and facilities Types of underground living spaces and people, and related topics: Notes References Jochelson, Waldemar. (1906). "Past and Present Subterranean Dwellings of the Tribes of North Eastern Asia and North Western America." In Congrès International des Américanistes, XVe session tenue à Québec en 1906, Vol. 2. Quebec: International Congress of Americanists, 1906, pp. 115–128. Reprinted Nendeln, Liechtenstein: Kraus Reprint, 1968. External links Living Semi-subterranean structures