geofront

plural geofronts

1. An underground urban area built to expand a city that is geographically limited.

   I figured you two had probably seen something like that before, but I've never even heard of these geofronts existing.

   2015, Maddy Koller, Star Maiden, page 81

   4 more examples

   Recently, intense interest has been shown in new frontier space development, such as waterfront and geofront, as underground space is called in Japan.

   1996, International Journal of Offshore and Polar Engineering

   The tours covered a wide spectrum of subjects and places, including a geofront project, the Yokohama Exotic Showcase exposition, Sakaki town in Nagano.

   1988, The Japanese Press, page 64

   To achieve the role of one of the world's leading international cities by the beginning of the 21st century, Tokyo must move quickly to liberate its skyfront and waterfront areas to create more living and office space, improve its infrastructure by developing its subterranean geofront, and construct the facilities necessary for an international city, especially a 24-hour airport.

   1990, Journal of Japanese Trade & Industry - Volumes 9-10, page 14

   However, as has been recently discussed as a topic in terms of geofront and waterfront developments, tunnelling of larger diameters and at greater depths is predicted to be necessary, so that the need for further automation and robotization is increased for the purpose of safety and improvement in productivity.

   1991, Advanced Robotics: The International Journal of the Robotics Society, page 430