Home > SHIGA 滋賀県 > Kusatsu 草津市 > Lake Biwa Museum 琵琶湖博物館
Lake Biwa's forerunner Lake Oyamada emerged about 4 million years ago southeast of Shiga in Iga, Mie Prefecture. Over millions of years, at least two lakes formed and disappeared before Lake Katata (western Otsu) formed.
Keywords: shiga kusatsu karasuma peninsula lake biwa museum aquarium fish

Lake Biwa's forerunner Lake Oyamada emerged about 4 million years ago southeast of Shiga in Iga, Mie Prefecture. Over millions of years, at least two lakes formed and disappeared before Lake Katata (western Otsu) formed.

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