Chain Crosswords Short Geography Hard — Set 3

Hard 15×15 Set 3
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10
Across
  1. 1. Where a river meets the sea
  2. 6. Slow-moving mass of ice
  3. 7. A word related to geography
  4. 10. Flat elevated area of land
Down
  1. 2. Treeless Arctic plain
  2. 3. A word related to geography
  3. 4. A word related to geography
  4. 5. Narrow strip connecting two landmasses
  5. 8. Land completely surrounded by water
  6. 9. Deep depression in ocean floor