Ailsa Craig
Ailsa Craig (/ ˈ eɪ l s ə /; Scots: Ailsae Craig; Scottish Gaelic: Creag Ealasaid) is an island of 99 ha (240 acres) in the outer Firth of Clyde, 16 km (8 + 1 ⁄ 2 nmi) west of mainland Scotland, upon which microgranite has long been quarried to make curling stones. The now-uninhabited island comprises the remains of a magmatic pluton formed during …