Wedge-shaped gallery grave
（重定向自Wedge Tomb）
A wedge-shaped gallery grave or wedge tomb is a type of Irish chamber tomb. They are so named because the burial chamber narrows at one end (usually decreasing both in height and width from west to east), producing a wedge shape in elevation. An antechamber is separated from the burial area by a simple jamb or sill, and the doorway generally faces west.