Karatsu-sen 唐津線
Karatsu-sen: This line connects the city of Saga in the Tsukushi Plain on the south side of Saga Prefecture with the port city of Karatsu on the north side, crossing the mountain range between Taku and Kyûragi. The ancient castle town of Karatsu is situated on the estuary facing the Korean peninsula. The line was built between 1898 and 1903 and is diesel operated today. Trains start at Saga and enter the Karatsu-sen 6, 4 km further to the west; Taku lies 15, 2 km up the line, and Kyûragi 20, 8 km. The city of Karatsu is reached after 40, 3 km. From here trains join the electrified Chikuhi-sen from Fukuoka for the remaining 2, 2 km to Nishi Karatsu (West Karatsu). Today all trains are local stopping trains with a service roughly every hour.