CONTOUR LINES Contour lines are imaginary lines drawn on a map to connect points that have the same elevation above sea level. They are widely used in topographic maps to represent the shape and elevation of the land surface. CHARACTERISTICS OF CONTOUR LINES 1. Equal Elevation – Each contour line represents a constant elevation. 2. Contour Interval – The vertical distance or difference in height between two successive contour lines. 3. Close Spacing – Indicates steep slopes. 4. Wide Spacing – In

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What are contour lines? They’re the squiggly lines on your map that show elevation. Each line represents a specific height above sea level. How to read them: Close together = steep terrain Far apart = gentle slopes Circles = hills or mountains (the smaller the circle, the higher the peak!) Why it matters: Plan routes that match your fitness level Spot challenging climbs before you set off Find scenic viewpoints and avoid unexpected steep descents Pro tip: Combine contour reading with OS Maps’ 3D