Sasamori Hills

This hilly region occupies part of the Dewa Mountains in southern Akita Prefecture. It is bounded to the north and east by the Omono River valley, to the south by the Koyoshi River fault cliff, and to the west by the Sea of ​​Japan. The Himegamiyama fault cliff is at the eastern foot of the mountain, and the Daikokumori fault cliff is at the south, forming a border with the Yokote Basin. The hills are divided into north and south by the Ishizawa River, a tributary of the Koyoshi River, and in the north there are mountains of 300 to 600 meters such as Sasamoriyama (595 meters), and eroded valleys have developed. Rice paddies have been developed in the valley bottoms in a dendritic pattern, and small-scale rice farming is carried out. Most of the hills are forested, and the amount of snowfall is high. The area has a continuing population outflow, making it one of the least densely populated areas in Akita Prefecture. In recent years, oil field exploration has been carried out, and beef and dairy cattle have been raised.

[Reijiro Miyazaki]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

秋田県南部、出羽山地(でわさんち)の一部を占める丘陵地帯。北と東は雄物(おもの)川の谷、南は子吉(こよし)川の断層崖(がい)でくぎられ、西は日本海に迫る。東麓(とうろく)に姫神(ひめがみ)山断層崖、南に大黒森断層崖があって横手盆地と境している。丘陵は子吉川の支流石沢川によって南北に区分され、北部には笹森山（595メートル）などの300～600メートルの山々があり、侵食谷が発達している。谷底には樹枝状に水田が開発され、零細な水田耕作が行われる。丘陵の大部分は森林で、積雪量も多い。人口流出が続き、秋田県内でも人口密度の低い地域。近年油田の試掘や、肉牛、乳牛の飼育が行われている。

［宮崎禮次郎］

出典　小学館　日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について　情報 | 凡例