When a railroad was constructed after the Meiji period, Kamenose tunnel was built, but the tunnel caved in due to the soft ground, and the railroad had to be abandoned.
明治時代以降に鉄道が敷設されたときに亀ノ瀬トンネルが掘られたが、軟弱地盤のため、崩壊して放棄された。