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,
Hills in the Puget Lowland contain several peaks over high, including the Fidalgo Island high point, Mount Erie. Mason County's Olympic Mountains foothills are called the Satsop Hills. Hills in the Puget Lowland Hills in the Puget Lowland, between the Cascades and the Olympic Mountains, including the entire Seattle metropolitan area, are generally between and rarely more than above sea level. Hills are often notable geologically and for social reasons, such as the seven hills of Seattle. The Puget Lowland lies between the Cascades and Olympic Mountains and once contained a plateau of glacial till not usually more than above sea level. The plateau, "the