Beach

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Across
  1. 4. Cascading stream of water
  2. 8. Cold, treeless plain with frozen subsoil
  3. 11. Steep, high cliff or bank
  4. 13. Large mass of ice
  5. 14. Mountain with a vent for lava and ash
  6. 15. Fertile area in a desert with water and vegetation
  7. 16. Large flowing body of water
  8. 19. Flat, elevated landform
  9. 20. Long, narrow elevated landform
Down
  1. 1. Tall landform with a peak
  2. 2. Large underground chamber or cave
  3. 3. Deep, narrow gorge with steep sides
  4. 5. Land surrounded by water on three sides
  5. 6. Shallow body of water separated from the sea by a barrier
  6. 7. Dense collection of trees
  7. 9. Arid, barren land with little rainfall
  8. 10. Wetland with grasses and shallow water
  9. 12. Long, narrow inlet with steep sides
  10. 17. Lowland between hills or mountains
  11. 18. Deep, narrow passage between cliffs