Cuillin He partnered Louis Agassiz on his trip to Scotland in 1840 and although they subsequently argued, Forbes went on to publish other important papers on Alpine glaciers. In 1904 Alfred Harker published "The Tertiary Igneous Rocks of Skye", the first detailed scientific study of an extinct volcano. The Cuillin encompasses a wide range of habitats, changing with altitude. At the base there are conifer plantations, coastal woodlands and areas of heather moorland and rough grassland. The lower slopes are covered by various different types of bog, with grassland on the better-drained slopes that are found above 400 m. Higher up,
South Soufriere Hills and the Soufrière Hills stratovolcano. It ranges in elevation from 200 to 750 m above sea level and contains tropical evergreen forest. Other IBAs on the island are the Northern Forested Ghauts and Centre Hills. The IBA was identified as such by BirdLife International because it supports, populations of bridled quail-doves, green-throated caribs, Antillean crested hummingbirds, scaly-breasted thrashers, pearly-eyed thrashers, brown tremblers, forest thrushes, Montserrat orioles and Lesser Antillean bullfinches. South Soufriere Hills South Soufriere Hills is a 35 ha patch of forest on the island of Montserrat, a British Overseas Territory in the Leeward Islands of the Caribbean Sea.