Laguna de Bay (English spelling)

Japanese: バイ[湖]（英語表記）Laguna de Bay

A lake in the southern part of Luzon, Philippines. Recently it has also been simply called "Laguna (Lake)". It stretches from the southeast of Manila across the provinces of Laguna and Rizal, and with an area of 891 km2, it is the largest lake in the Philippines. It is thought to have been formed when part of Manila Bay was cut off by a slight uplift on the eastern shore of Manila Bay and the accumulation of volcanic debris from volcanic activity in the southern part of the lake. Volcanic fallout has accumulated on the bottom of the lake, making it shallow at less than 5m in most places, but it has been an important place of life for the surrounding residents since ancient times as a fishing ground and a transportation route.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

フィリピン，ルソン島南部の湖。最近ではたんに〈ラグナ(湖)〉とも呼ばれる。マニラの南東部からラグナ，リサール両州にまたがって広がり，湖水面積891km2はフィリピン最大である。マニラ湾東岸部における軽い曲隆と湖南地方一帯の火山活動に伴う噴出物残滓の堆積により，マニラ湾の一部が切断されてできたと考えられる。湖底には火山性降下物がたまって水深は大部分で5m未満と浅いが，古来漁場，交通路として周辺住民の重要な生活の場となってきた。

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

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