sentences:  Workers digging a tunnel near encountered problems with underground hot springs, similar to that experienced in the construction of the Tanna Tunnel, which had recently been completed years later than originally projected and far over budget.On March 30, 1935, the initial 8.7 km section of the Itō Line linking Atami with was opened.The second (8.3 km) section from Ajiro to was opened on December 15, 1938.