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Surname 荒谷 (荒谷 , Арая , Аратани ) , around the world, is a very rare last name. The family name 荒谷 is habitual in Armenia, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in China, Armenia, and Russia. Also, 荒谷 is the forename as well as the last name.