West River signal box was located just south of Ely

on the Cambridge route. ISeen in its twilight years of operation, it was located at the eastern end of the small village of Little Thetford. It controlled access to a dead-end minor road that ended on the banks of the Ouse that flowed just beyond the wheat field in the background. The box is a standard Great Eastern design but I can find no date of construction unless anybody can advise me. Notice the blanket attached above the door and I cannot work out what item is seen hanging by a strap to the bottom of the steps.