David Derbyshire writes in The Daily Mail that anc...  ...ent Britons may have developed a sophistated land navigation system among various sites and markers. Amateur...  ...f that the landmarks were deliberately created as navigational aides. Many were built within sight of each other...

When you approach the North Pole, compasses don't...  ...c Ice Cap, are having to use alternate methods of navigation . To measure wind direction, they are using a pair...