01 / Arco No. 23 and Freight Car Roto No. 39 (アルコ23号・貨車ロト39号)
A locomotive hauled wagons of mountain sandto fill in the mine tunnels after digging.
Arco No. 23 was imported from the United States in 1920 and ran until 1976. It carried mountain sand from Iizuka, by way of Kotake, to a pit in Miyawaka (大之浦抗), to backfill tunnels after mining; it was called the "filling train" (充填列車). It was restored in November 2019 and stands in the sports park's open field.
- Kotake Town Designated Cultural Property No. 4
- Imported 1920; ran until 1976
- Restored November 2019