Cameron McNeish celebrates Scotland's landscape, following a new national trail linking Kirk Yetholm in the Borders with Cape Wrath, the most north-westerly point on the mainland.Continuing his journey, Cameron walks the final part of this 470-mile route. Starting in Highland Perthshire, he travels through some of Scotland's most remote landscapes including the Cairngorms, Kintail and the sparse scenery of Sutherland.