noun
Sanriku
Refers to the coastal region of northeastern Honshu, historically comprising the three provinces of Rikuzen, Rikuchū, and Rikuō (now parts of Miyagi, Iwate, and Aomori prefectures).
三陸海岸はリアス式海岸で知られている。
The Sanriku Coast is known for its ria coastline.