Stiletto for ranging distance. The stiletto was later adopted throughout Italy as the favored offensive thrusting knife ("arma manesca") of the medieval assassin,<ref name="ATK"/ so much so that it was invariably prohibited as a treacherous weapon ("arma insidiosa") by the authorities of the day. The stiletto was preferred by assassins as it was silent, easily concealed inside a sleeve or jacket, and featured a blade capable of easily penetrating the heavy leather and fabric clothing of the day, while inflicting mortal wounds that tended to bleed less than those made by other types of knives. In Italy, the stiletto began to
Heel-shaped cairn Heel-shaped cairn The heel-shaped cairn, with its usually cruciform chamber, is a type of megalithic monument that is found in Scotland, especially in Caithness and Sutherland and on the Shetland Islands. On Orkney, the Isbister Cairn is the only site that is similar in shape. The chambers usually lie in a round cairn made of broken rocks, which either contemporaneously or later were surrounded by the eponymous platform, up to 20 metres wide at the front and from 1.0 to 1.5 metres high, and were partly enclosed by large kerbstones. A gentle concave exedra is characteristic of the front face.