The San'yō Main Line is a major railway line in Japan, operated by the West Japan Railway Company (JR West). It runs approximately 500 kilometers from Osaka to Hakata, connecting key cities such as Kōbe, Okayama, and Fukuoka. The line plays a crucial role in regional transportation, facilitating both passenger and freight services. Opened in stages between 1889 and 1972, the San'yō Main Line features various train services, including local, rapid, and express trains. It also intersects with other important lines, enhancing connectivity across the Honshu and Kyushu islands. The line is known for its scenic views, particularly along the coastline.