The tracks were once replaced by the new line which consists of tunnels, when the route between Saga Station (which has now changed its name to Saga-Arashiyama Station) to Umahori Station was converted to a double-track.
嵯峨駅（現在は嵯峨嵐山駅と改名）から馬堀駅までの複線化に伴い、トンネル経由の新線に切り替えられた。