Name the valley where Miralago is a part of it and Bernina Express line cross it
Miralago: Miralago is a small village in the Poschiavo valley, at the southern end of the Lago di Poschiavo. Bernina Express: The Bernina Express is a train connecting Chur (or Davos) in Switzerland to Poschiavo in Switzerland and Tirano in Italy by crossing the Swiss Engadin Alps.
the Poschiavo valley