Rudno-Kosiły [kɔˈɕiwɨ] (to 2010 known as Kosiły) is a village in the administrative district of Gmina Krzynowłoga Mała, within Przasnysz County, Masovian Voivodeship, in east-central Poland.

[1] During Nazi Occupation it was part of New Berlin military training area

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