Indirect striking: Not by directly striking stones with hammers but by indirectly striking stones covered with deer's horns or chisel made of animal bones to peel off a piece of stone (called a flake) and making a stone blade from it.
間接打法･･･打撃具を直接打ちつけるのではなく、石材の一端にシカの角（つの）や獣骨のタガネを当て、槌で間接的に打撃を加えて石片をはぎ取り、その石片（剥片とよぶ）から石刃技法をつくる。