The San'in Main Line is a railway line in Japan, operated by the West Japan Railway Company. It runs along the northern coast of Honshu, connecting the cities of Kinosaki Onsen and Mizushima. The line spans approximately 200 kilometers and serves both local and express trains, providing access to various scenic areas and attractions. Opened in stages between 1910 and 1982, the San'in Main Line plays a crucial role in regional transportation. It passes through picturesque landscapes, including mountains and coastlines, making it a popular choice for travelers exploring the San'in region.