What is a topographic map? The colours on the map are used to show altitude layers, for example, green between 0 and 200 metres, yellow from 200 to 500 metres, and brown above 500 metres. lynne broda2017-10-23T09:55:38+00:00 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.