| Teshio Mountains | 
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| Peak | Mount Pisshiri | 
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| Elevation | 1,031.5 m (3,384 ft) | 
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| Coordinates | 44°21′20″N 142°1′55″E / 44.35556°N 142.03194°E / 44.35556; 142.03194 | 
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| Native name |  | 
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| Country | Japan | 
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| State | Hokkaidō | 
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| Regions | Kamikawa SubprefectureRumoi SubprefectureSorachi SubprefectureSōya Subprefecture
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| Districts | Esashi District, HokkaidōShibetsu, HokkaidōKamikawa (Teshio) District, HokkaidōNakagawa (Teshio) District, HokkaidōNayoro, HokkaidōRumoi District, HokkaidōSōya District, HokkaidōTeshio District, HokkaidōUryū District, HokkaidōRumoi, Hokkaidō
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| Municipalities | Bifuka, HokkaidōEnbetsu, HokkaidōHaboro, HokkaidōHamatonbetsu, HokkaidōHorokanai, HokkaidōHoronobe, HokkaidōKenbuchi, HokkaidōMashike, HokkaidōNakagawa, HokkaidōNakatonbetsu, HokkaidōNumata, HokkaidōObira, HokkaidōOtoineppu, HokkaidōSarufutsu, HokkaidōTeshio, HokkaidōTomamae, HokkaidōWassamu, Hokkaidō
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| Rock type | Fold (geology) | 
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The Teshio Mountains (天塩山地 Teshio-sanchi) are a mountain range of Hokkaidō, Japan.