Corgarff is a hamlet in Aberdeenshire, Scotland, in the Grampian Mountains. The nearby Corgarff Castle was used as a military barracks in the 18th century. The hamlet's primary school closed in 1998. Most of the heather moors around Corgarff are managed for grouse. Narrow strips of heather, Ideally about half an hectare, are burned on a 7-10 year cycl…Corgarff is a hamlet in Aberdeenshire, Scotland, in the Grampian Mountains. The nearby Corgarff Castle was used as a military barracks in the 18th century. The hamlet's primary school closed in 1998. Most of the heather moors around Corgarff are managed for grouse. Narrow strips of heather, Ideally about half an hectare, are burned on a 7-10 year cycle creating a distinctive mosaic pattern on the hills. The burnt heather quickly sprouts forming fresh young shoots, the main food for the red grouse. The taller heather offers the grouse nesting sites and protection from predators such as foxes and carrion crow.