A miss-strike ring is an opaque circle that can be found near the point of impact or percussion on the butt of a detachment or on the core platform. It occurs when a blow is struck which is not sufficient to detach a flake or a blade and appears as a small circle, probably surrounded by a patch of discolouration due to the interference of the crack with the passage of light through the flint. (Trustees of the British Museum, 1968, 26).