 The northernmost end would include a second depot for the line and a surface terminus station next to a new housing massif that would be located near the industrial zones of Parnas and Shuvalovo.After the completion of the extension to Prospekt Prosvescheniya in 1988, work immediately began on the construction of the Vyborgsoye depot and 1991 the initial station was approved by the Committee on City Construction and Architecture.Then the collapse of the Soviet Union and in the financial crises that followed most of the projects were frozen, including Parnas.