Oshima Tsumugi is a one of 3 best wovens along with Persian carpets and Cobra woven.
Oshima Tsumugi: Amami-Oshima Island, which is located in the sea south of Kyushu. Oshima Tsumugi (mud-dyed pongee kimono) were produced this island. "Doro-zome" is one of the traditional dying methods with muddy clays in Amami-Ohshima Island, Kagoshima, Japan. The brilliant black color of dyed "Ohshima Tsumugi" derives from muddy clays in Dorota (small ponds with muddy clays).