Arrow-Heads and a Dagger Blade North Caucasus, Burial Mound 31, village of Novosvobodnaya Middle of the 3rd millenium BC Flint L of arrow-heads 2.2-3.5 cm, l of dagger blade 13.2 cm These arrow-heads are roughly triangular in shape. It is possible that they were inserted into a missile weapon arranged on the principle of a harpoon. The dagger blade is leaf-shaped and sharp along the edges. There are grooves on both sides of the butt so that the blade could be attached securely to the handle.