| This Yubetsu technique and the other saisekijin exfoliation techniques that were influenced by it fan out across the northern half of the Tohoku region, such as Yamagata, Niigata, and Ibaraki Prefectures, beyond the Tsugaru Straits. |
この湧別技法やその影響を受けた細石刃剥離技術は、津軽海峡を越えて山形県、新潟県、茨城県など東北地方の北半分まで拡がっている。 |