A neologim developed to refer to deep underground construction developments. NERV headquarters is located in a geofront directly below the cituy of Tokyo-3. this geofront is a massive dome-shaped vault 6 kilometers wide and 900 meters high. The pyramidal NERV building, surrouned by a terraced and forested landscape, rests on the floor below to dome and possesses sub-basements even further below that. Vehicles and personnel enter and leave the geofront via trains that spiral up and down the curved walls. Many of Tokyo-3's above-ground skyscraper blocks are designed to be retracted below the surface and locked into a position on the underside of the roof and dome; this configuration is intended to protect them if the city is attacked, but is has proved only partially effective.

From Neon Genesis Evangelion #3 manga published by Viz Comics.