The Samcheok Railway (Japanese: 三陟鐵道株式會社, Sanchoku Tetsudō Kabushiki Kaisha; Korean: 삼척철도주식회사, Samcheok Cheoldo Jusikhoesa), was a privately owned railway company in Japanese-occupied Korea. The first 41.4 km (25.7 mi) section of the line (Mukho Port–Dogye) was opened on 31 July 1940. The line was named Cheoram Line, which ran from Mukho, a port on Korea's east coast that became part of Donghae in 1980, to Cheoram in the Taebaek Mountains, to develop three coal fields. Between Simpo-ri and Tong-ri stations, the great height difference was scaled by a steep double-track railway. Freight railcars going up and down were connected to the same cable, passengers had to walk up the mountain. On 1 August 1940, a branch from Bukpyeong (today Donghae Station) to Mukho bypassing Mukho Port was opened