Kurobe Dam

[1] Problems quickly arose while transporting material to the construction site as only one small railway existed through the narrow gorge.

The tunnel's construction proved an arduous task as a large fracture zone in the rock was encountered which took seven months to repair.

4 power station was built completely underground to protect it from common avalanches in the gorge and also for nature conservation purposes.

The dam initiated the development of Japan's first 275kV transmission system as well which allowed the transfer of electricity over greater distances.

[4] The dam's spillway is located on its crest and contains 10 11.5 m (38 ft) wide uncontrolled openings with a maximum discharge capacity of 906 m3/s (32,000 cu ft/s).

[5] The Kurobe Dam is the most popular hydropower site in Japan[1] and, between late June and mid-October, water is released from its spillway for onlookers.

Starting from Toyama Station, visitors can take a combination of trains, cable cars, buses, and walking to access the dam.

The whole trip from Toyama Station takes roughly four hours to complete one-way, and costs around 10,000 yen($66.68 USD) in transportation fees.

It was adapted into the 1968 film The Sands of Kurobe, which focuses on the perils that the construction of the dam and Kanden Tunnel entailed and other circumstances that took a high toll on human life.

[1] The final arc of the 2004 Tetsujin 28-go anime, which takes place in a fictionalized 1950s Japan, heavily involves the construction of the Kurobe Dam.

Concrete bucket used during construction
Lake Kurobe
Visitors at Kurobe Dam