Rosehall is a remote hamlet in the Parish of Creich near the confluence of the River Cassley and the River Oykel, 1 mile northwest of Altass, in Sutherland, Scottish Highlands and is in the Scottish council area of Highland. It is the site of the main road bridge over the Cassley, which is just downstream from the spectacular Achness Waterfall, commonly known simply as the Cassley Falls.