The Taw yağı (pronounced [tʌʊ jʌˈɣɯ] in Tatar) or Viryal (Tatar Cyrillic: Тау ягы, Latin: Taw yağı; Chuvash: Вирьял; Russian: Го́рная сторона́, literally Hill Bank Land) was a historical region of Tatarstan, Khanate of Kazan, Volga Bulgaria, the name is known since the 1550s. This land was situated at the Hill, i.e. right bank of the Volga. Since 1547 this region was disintegrated from the khanate. The Feudal lords of the Hill Bank Land were eventually joined Russia after 1556. Sviyazhsk was established as the center of the Hill Bank Land. Later, this part of the former khanate was incorporated to Sviyazhsk Uyezd.