Popular locations for hillwalking include the Lake District, the Peak District, the Yorkshire Dales, Snowdonia, the Brecon Beacons and Black Mountains, Wales, Dartmoor and the Scottish Highlands. The mountains in Britain are modest in height, with Ben Nevis at the highest, but the unpredictably wide range of weather conditions, and often difficult terrain, can make walking in many areas challenging. Peak bagging provides a focus for the activities of many hillwalkers. The first of the many hill lists compiled for this purpose was the Munros - mountains in Scotland over - which remains one of the most popular.