British Isles naming dispute "British-Irish Isles" and the Islands of the North Atlantic. In documents drawn up jointly between the British and Irish governments, the archipelago is referred to simply as "these islands". To some, the dispute is partly semantic, and the term is a value-free geographic one, while, to others, it is a value-laden political one. The Crown dependencies of the Channel Islands may also for geo-political reasons be included in the British Isles, despite not being geographically part of the archipelago. United Kingdom law uses the term British Islands to refer to the UK, Channel Islands, and Isle of Man as a
British Isles also taken to be part of the British Isles, even though, as islands off the coast of France, they do not form part of the archipelago. The oldest rocks in the group are in the north west of Scotland, Ireland and North Wales and are 2.7 billion years old. During the Silurian period the north-western regions collided with the south-east, which had been part of a separate continental landmass. The topography of the islands is modest in scale by global standards. Ben Nevis rises to an elevation of only , and Lough Neagh, which is notably larger than other lakes