United States Marine Raider stiletto staples at the throat was to prevent the sharp knife from slashing through the sheath. Unfortunately, these staples could severely scar the stiletto blade. It is believed that these sheath variants evolved by trial and error, as the late issues had both staples and plates. The U.S. Marine Raider stiletto was designed for one purpose: killing the enemy, and its design was not compromised. The stiletto was a finely designed, almost delicate, single-purpose weapon, which did not include a variety of other tasks normally associated with a machete or utility knife. Due to the thin tip, even thinner than the
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.