In autumn, when the leaves change color, the "Tunnel of scarlet maple leaves" between Ichihara Station and Ninose Station is famous among railway fans and beyond; throughout the period when Kifune-jinja Shrine is decorated with lanterns of colorful fall leaves, the tunnel is illuminated as well.
秋の紅葉の時期に市原駅～二ノ瀬駅間で見ることができる『もみじのトンネル』は鉄道ファンのみならずとも有名で、貴船もみじ灯篭が行われる期間中はライトアップも行われる。