1. cutting: an excavation through high ground for a road, canal, etc.
  2. embankment: an artificial elevation constructed from earth, stone, etc. carrying a road, railway or similar or serving to dam water.
  3. dune: a mound, ridge or hill of drifted material on the sea coast or in a desert. (adapted from IHO Dictionary, S-32, 5th Edition, 1496)
  4. hill: a small isolated elevation, smaller than a mountain. (IHO Dictionary, S-32, 5th Edition, 2262)
  5. pingo: a dome-shaped hill formed in a permafrost area when the hydrostatic pressure of freezing ground water causes the upheaval of a layer of frozen ground. (Encyclopaedia Britannica Mycropaedia, 15th Edition)
  6. cliff: land rising abruptly for a considerable distance above the water or surrounding land. (IHO Dictionary, S-32, 5th Edition, 829)
  7. scree: rocky debris on the side or at the foot of a mountain forming a steep stony slope.