Spiral Tunnels, Yoho National Park, British Columbia — CP Rail locomotive 4242 — Photo courtesy Canadian Pacific

Description

CP Rail train (locomotive 4242) passing through spiral tunnels in Yoho National Park, British Columbia, surrounded by dense forests. Reverse details the engineering of the tunnels built in 1909 to reduce the railway grade. Publisher: Dist. by Canadian Souvenir Sales Ltd. and Premieré, with partially visible postmark and cancellation.