From 1881, in the Ashio Copper Mine, many veins of copper ore were discovered and production of copper greatly increased. Because of that, many materials used in copper mines and foods for workers became increasingly necessary.
Therefore, people made air cables and easy carriage railroad in order to keep up transport capacities. Now, you can see the remains of those tracks in Ashio. In the Mikouchi and Girimiki areas, the stone of the base of the bridge and roads still remain.
The Kasamatsu One-Sided Tunnel remains on the right bank of the Watarase River bordering on Gunma Prefecture. This tunnel was cut out in the shape of the katakana letter "コ" from a hard bed of rock in order to pass through the deep and narrow valley here.
The remains of the horse-cart railway
The Mikouchi Area / The KarafuroArea
