Kannonji Temple (Yamagata)

...The Nittsuko River and the Arase River flow westward, joining at the western edge of the town and flowing into the Sea of ​​Japan. Kannonji, the central settlement where Route 344 and Route 345 intersect, has developed as a valley settlement of the Arase River since the Middle Ages, and was the residence of the Kisugi clan during the Sengoku period. Oil exploration began in the Edo period, and the Yunodai oil field was fully developed in the early Showa period and was used until World War II, but operations were halted in 1964.

*Some of the terminology that mentions "Kanonji Temple (Yamagata)" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…日向（につこう）川と荒瀬川が西流し，町の西端で合流して日本海に注ぐ。国道344号線と345号線が交差する中心集落観音寺は中世以来，荒瀬川の谷口集落として発達し，戦国時代には来次（きすぎ）氏の居城があった。江戸時代から石油の試掘が行われ，湯の台油田は昭和初期に本格的に開発され第2次大戦中まで利用されたが，1964年に操業が停止された。…

※「観音寺（山形）」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