The Highlands The Highlands are covered with a variety of rock including granite, sandstone and limestone. Snow melt seeps into the rock and emerges in the mountain springs, running through the heather covered ground. Common flavours are floral and heathery with low or no peat content. Culturally peat is not commonly used, although there are always exceptions, i.e. Clynelish is mildly smoky. For a really classic Highland Malt try Glengoyne.