Valley - A narrow bottom with sides sloping upwards., Spur - A long, gently-sloping area of ground that runs down from a hill, sometimes called a ‘tongue’, Ridge - A series of hills which make a line of high ground, Gentle slope - Where the land slowly decreases in height, Steep slope - Where the land decreases in height quickly, Plateau - An area of flat land at the top of a hill, Saddle - A dip or lower point of land on a ridge,

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