San'yō-Onoda is a city located in Yamaguchi Prefecture, Japan. As of 31 May 2023, the city had an estimated population of 59,867 in 29,122 households and a population density of 530 persons per km2. T

The Mine Line is a rural railway line owned and operated by the West Japan Railway Company. It connects Asa Station in San'yō-Onoda to Nagatoshi Station in Nagato, both in Yamaguchi Prefecture, Japan.