Shumarinai







Shumarinai in Hokkaido, Japan
















Uryu water pipes
















dai ichi and monument















inside dai-ichi

















































Okenji shrine

In the first half of the twentieth century Japan was rapidly expanding its presence on Hokkaido with the intention of precluding Russian influence in the area. It was at this same time that Japan invaded several of its Asian neighbors.
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Poured between a myriad of intertwining ravines in northwestern Hokkaido, Lake Shumarinai is the largest artificial body of water in Japan. Forested with thick pine, the surrounding area has been designated as a prefectural park and lies within Town Horokanai. Horokanai is remarkable in that it boasts the coldest temperature ever recorded in Japan, an arctic
-41° C (-42° F). This area is also known for its inundation with snow. Several meters in a winter is not uncommon. In the spring and early summer runoff fills the lake. Late summer presents the sight of a vast muddy plain dotted with the stumps of hundreds of trees from its construction in the late 1930s and early ‘40s. In winter, thick ice covers the surface and people camp out to drill a meter down and set their fishing lines.

A diversion on the side of the lake carries water seven kilometers over the mountains eventually to rush down in three pipes. The water spins great turbines lying within the basement of Uryu power station. Located in West Furen, Uryu power station supplies electricity to a vast area – essentially, all of northern Hokkaido from Wakkanai to Asahikawa (though several other stations also feed the latter), and from the Japan Sea to Shiretoko. If you live in this area, your electricity comes from Shumarinai.

At the lake, two dams hold at bay the main body of water. Named simply "dai ichi" and "dai ni" (No. 1 and No. 2), they are tall, gray concrete structures showing signs of their age in a near-boreal climate.

On the hill between the dams lie the caretakers’ building, an observation tower, and a picnic area. There is also a tall, stone monument appearing as a slab standing at the edge of the hill.

The monument honors the people who were killed in the making of Shumarinai. 304 persons died constructing the dams, a railway from Nayoro to Horokanai (now defunct), and Uryu power station. 286 were Japanese unable to find a better job in the frontier that was Hokkaido; 18 were Korean slaves, prisoners of war.

Inside dai ichi dam run three tunnels. Walking within them is walking in a tomb. Many corpses were simply thrown into the concrete that became the dam. Likewise, a few kilometers away, at the end of an unmarked and somewhat overgrown roadway is a graveyard. The stones are new – although trees surround the entire area, behind the cemetery is a clearing with high brush. For the past several years, Korean and Japanese volunteers have been sifting through the soil there for the unknown number of bodies buried in undesignated graves. An outdoor furnace lies hidden in the weeds. If you go there, you will know the graveyard by the first stone you see, a cross of granite on an otherwise Asian tomb.

Over 71,000 Koreans were deported from their country to work in Hokkaido. 3000 made Shumarinai, the railway, and the power station. It’s reasonable to guess that since the number of deceased Japanese was greater, they outnumbered the Koreans substantially.

Locals can still recall this "nearby" past. Sasaki Kenichi of Furen relates that his grandfather helped Koreans who managed to escape the labor camp. In the town of Furen proper, there was a detention center for escapees who were recaptured. Mr. Tanii, a former mayor, recalls that as a boy he made onigiri (rice balls) and took them next door to the prisoners chained to the walls.

Between the graves and the dams is a simple wooden shrine, Okenji Okenji. Inside are wooden plaques bearing the Buddhist name granted a deceased person, detailed explanations and pictures of the history of Shumarinai, and in the back room, a cluster of shovels.

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If you would like to help search for the remains of the deceased of Shumarinai, the volunteers work for about a week every year in early August. The phone number for Horokanai Town Hall is 01653-5-2121. I am sure help is welcome. Shumarinai Networks is the Japanese-language website of the organization that finds and properly buries those who made the dams.


Adam B. Smith
Furen, Japan
July 2001

Shumarinai Networks

Japanese website of the organization that finds and buries
those who made Shumarinai.







draw down (autumn)



































































































Map of Shumarinai
(English)
Map of Shumarinai
(Japanese)
Korean Slaves in Hokkaido
Listed by Town