![]() Instead of a closed inner circle, a ridgeline can look like a big oval. Ridgeline: Think of a ridgeline as an elongated peak, not coming to a fine point.Ledge: Ledges or flat areas on the side of a mountain appear as protruding U-shapes that point away from the peak.Valleys: When contour lines cross a valley or a stream, they make a sharp-pointed V or U-shape.Cliff: If you see two or more lines converge until they appear as a single line, this represents a cliff.In this map, lower contours have greenish colors. ![]() Depression Ring: Occasionally, an inner ring indicates a depression (lowest elevation).In this map, the highest points have reddish colors. Peak Ring: The innermost ring at the center of several contour loops almost always represents a peak (highest elevation).Greenbelly describes different formations that can be observed with contour lines: Therefore, each point on that line is the same height above sea level. What is a contour line? Contour lines mark points of equal elevation on a map. This map shows you where Valleys, Canyons, and Gorges are found throughout the U.S.A.
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