Tekka Matsu (Tekka pine trees) - exist in Aoba Ward, Yokohama City, Tetsu Town (Yokohama City), and Yawara Village, Tsukuba City, Ibaraki Prefecture, as legend goes that they were planted to commemorate the settlement of conflicts over province or town borders by higisho, and since then, they have been called 'Tekka matsu' or 'Tekka no matsu.'
鉄火松-横浜市青葉区(横浜市)鉄町や茨城県つくば市谷和原村にあり、それぞれ国や町の地境を巡って紛争が起こり、火起請で収めたと伝承されていて、それを祈念し松が植えられ「鉄火松」や「鉄火の松」と言われている。