Sea of ​​Holes - Ana no Umi

...This is the Kannabe Plain, whose north bank is a gently sloping alluvial fan zone that retains many ancient tombs and the remains of a clear strip of land. It is believed that Fukuyama Bay once extended into the Kannabe Plain, and the area was once a marshland known as "Ananoumi" (sea of ​​holes), which is often flooded even today, despite the existence of drainage facilities. The delta, which is the Fukuyama Plain in the strict sense, extends southeastward from Honjo-cho in Fukuyama City.

*Some of the terminology that refers to the "Sea of ​​Holes" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これが神辺平野であり，北岸側は緩傾斜の合流扇状地帯で，多くの古墳や明瞭な条里制の遺構を残す。古くは神辺平野一帯まで福山湾が湾入していたと考えられており，〈穴の海〉と呼ばれた沼沢地で，排水施設がある今日もしばしば湛水する。狭義の福山平野である三角州は福山市本庄町から南東方に広がる。…

※「穴の海」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