alt Hacker NewsA tunnel on the Kurobe gorge railway (originally used for dam contruction, now partially open to tourists) has reached 160 °C (!!) during construction, but has cooled down to manageable 40 °C since.
A tunnel on the Kurobe gorge railway (originally used for dam contruction, now partially open to tourists) has reached 160 °C (!!) during construction, but has cooled down to manageable 40 °C since.