Musashino Plateau

The Musashino Terrace (武蔵野台地, Musashino daichi), also translated as Musashino Platform, is a large platform of land, known as a river terrace, in the Kantō region of Honshu, Japan.

Much of western Tokyo, between the Tama River to the south and the Arakawa River to the north, is built on the terrace. Its northern section is located in southern Saitama Prefecture.

It consists of an alluvial fan formed by an ancient River Tama with a layer of volcanic ash, many metres deep, on top.