Some areas can have fog or low cloud descend very rapidly, causing walkers to lose their way. Most higher elevations should be avoided on all but the best days. Walkers should always carry rainproof and windproof clothing, together with food, a whistle, a compass, and detailed maps. Good boots are essential as even in summer many areas are wet, muddy, and boggy. When you are going walking for several hours or all day, it is advisable to leave a note with your intentions on the dashboard of your car, and tell the people at that evening's accommodation of your intentions.
All walkers do so at their own risk, particularly when walking on private property.