How to draw a circle on a map?

How do you draw a contour map? Please don't ignore if you know the answer!!?

• I need to draw a contour map myself, (not referring to model or pictures) and I need to include several kinds of landforms ( e.g cliff, concave slope, convex slope... ) Do you know some good websites which can tell me in details how to draw one? or you can tell me yourself :) Thank you in advance. Your answer will mean a lot to me. * basically, i need to draw a contour map on a piece of paper and I do not need to refer to any model or pictures, I just need to create a contour map of my own.

• Answer:

  These are hard to describe and much easier to draw. In general the contour lines are far apart on flat land and get closer as the land gets steeper. On a concave slope the lines will be concave. A cliff will have lines far apart then very close together with little or no transition. The ridge will have lines on both sides that vary in distance The valley will have lines on both sides that are close together Mountain will be a series of rings that can irregular in shape Convex slope will have convex lines. A contour map includes elevations at certain intervals. These are key to showing the shape of the land. The contour lines are drawn at regular intervals, like 10 feet with the elevations shown every 100 feet. You should go to a map site like Yahoo! maps Terraserver, and look at the topographic versions of these types of features. Look at central Colorado, or the California, Nevada border to see a variety of features. You will have to zoom in pretty close. Google maps sometimes also give a 3D depiction of terrain