Iwamiji - Iwamiji

…Alluvial lowlands open up along these rivers. In the early modern period, the Iwami Road (currently National Route 184) ran along the Umasa River, connecting Onomichi and the Iwami region, and Mirasaka, the central settlement, was its post station. Towns were formed and cattle and horse markets were held, making it a commercial center as well. …

*Some of the terminology that refers to "Iwami Road" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これらの川沿いに沖積低地が開ける。近世には馬洗川沿いに尾道と石見（いわみ）地方を結ぶ石見路(現，国道184号線)が通じ，中心集落の三良坂はその宿駅であった。町場が形成されて牛馬市なども開かれ，商業の中心地でもあった。…

※「石見路」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