Iwaya

…Most of the town area is in the northern part of the Sasamori Hills and is covered with forests. The center is Iwaya, where Ugo-Iwaya Station on the Uetsu Main Line is located. In the Middle Ages, it was the territory of Yuri Junizu, and in the early modern period, it was the territory of Kameda Domain, and was called Kawaouchigo. …

*Some of the terminology that mentions "Iwatani" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…町域の大部分は笹森丘陵北部にあたり，山林に覆われている。中心地は羽越本線羽後岩谷駅のある岩谷。中世は由利十二頭の所領，近世は亀田藩領で，川大内郷と呼ばれた。…

※「岩谷」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報