GWR TRAIN AT MARAZION MARSHES NEAR PENZANCE. "Through the Marshes " is a print from the original painting byStanhope Alexander Forbes created in 1927. The artwork depicts railway workers (known as "navvies") and a train crossing the Marazion Marshes near Penzance on the Great Western Railway line The painting is notable for its soft integration of landscape, man, and technology, showing the impact of the railway industry on the area.