He started the car again and drove through a series of tunnels and intersections, a virtual underground street grid, before arriving at a large garage filled with gleaming cars.
over width of carriage; height of tunnels, 5 m.
He could only steer them towards the Underground Railroad, the secretive systems of bunkers and tunnels running beneath major cities that were developed by the PMF during the ten-year war.
It's a series of bunkers connected by tunnels, set up by the PMF to protect the people during the East-West War.
gauge and the dimensions of the existing tunnels, arches, and other permanent works.