Cuillin Harta Corrie and Coire Na Creich in the Cuillin: Boswell and Johnson visited Skye during their tour of the Western Isles in 1773, and observed snow falling on the summits of the range in September. Boswell described the Cuillin as "a prodigious range of mountains, capped with rocks like pinnacles in a strange variety of shapes". Uniquely for a group of Scottish mountains there are no records of the majority of the Cuillin summits having been climbed prior to the start of mountaineering as a leisure activity in the Victorian era, a situation reflected in the fact that around half
Cheviot Hills they are separated from the Cheviot Hills by the Tyne Gap, part of which lies within the southern extent of the Northumberland National Park. The Cheviot Hills are primarily associated with geological activity from approximately 480 to 360 million years ago, when the continents of Avalonia and Laurentia collided, resulting in extensive volcanic activity (the Caledonian orogeny) which created a granite outcrop surrounded by lava flows. The area enjoys a general right to roam under both the English Countryside and Rights of Way Act 2000 and the Scottish Land Reform (Scotland) Act 2003. The Southern Cheviots include the Otterburn Training