High Quality Content by WIKIPEDIA articles! The mountains and hills of Great Britain, and to a lesser extent Ireland, are the subject of a considerable number of lists that categorise them by height, topographic prominence, or other criteria. They are commonly used as a basis for peak bagging, whereby hillwalkers attempt to reach all the summits on a given list. The oldest and best known of these lists is that of the Munros, mountains in Scotland over 3,000 feet (914 m); other well-known lists include the Corbetts, Wainwrights and Marilyns.