OS maps show physical and human features as symbols. This makes the maps easier to read. Each OS map has a key to show what the symbols mean. Large-scale maps - 1:1,250, 1:2,500 and 1:10,000.

Physical maps show natural features such as mountains, lowlands, major rivers, seas, oceans and ecosystems close ecosystemA community of animals, plants and microorganisms, together with the ...