Up express. Butlins Pwllheli in the background.

Peter Kerskake says "Situated just to the west of Afon Wen and just three miles or so from the end of the line at Pwllheli and on a virtually level stretch of track the little halt at Penychain was opened by the Great Western in the summer of 1933 to serve holiday makers visiting the area and six years before Butlins increased the popularity of the area with the beginning of work on its Holiday Camp, completion of which was delayed by the war until 1947.
The war years brought increased traffic to Penychain as the partly completed camp was taken over by the Navy becoming H.M.S. Glendower with special Navalmens' trains running down from far afield"