Berlin Hauptbahnhof fall of the Berlin Wall in 1989, city planners began work on a transport plan for reunified Berlin. One element of this became the "Pilzkonzept" (mushroom concept), in which a new north-south railway line intersecting the Stadtbahn was to be constructed. The name derived from the shape formed by the new line and existing lines, which vaguely resembles a mushroom. In June 1992 the federal government decided that the new station should be built on the site of Lehrter Bahnhof. While close to the centre of Berlin and government buildings, the area was still not heavily populated. The following year,
Heddon-on-the-Wall where the name means 'Hidda's pasture'. A Roman milecastle ('Milecastle 12') was located at the site of the present-day village, under what is now Town Farm, but no traces of it are currently visible. Prior to the 1960s, Heddon-on-the-Wall was a small village with an economy based strongly on traditional industry including farming and coal mining. Large-scale coal mining close to the village began in the late 1950s with the opening of the Bays Leap, a opencast mine site located a short distance north of Heddon-on-the-Wall. The site supported seven coal seams at its peak, and evidence was found of