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A closed contour drawn with short inward-pointing ticks represents

  • A.an area of unsurveyed ground
  • B.a depression or hollow
  • C.a hilltop or summit
  • D.a cliff face or scarp

Answer: B

The hachures distinguish ground falling inwards from a plain closed contour, which would be read as a summit. Without them a crater and a hill would be drawn identically, since both are closed loops with the same height on the line.

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