Across
- 3. a large valley with very steep sides and usually a river flowing along the bottom
- 6. the wide part of a river at the place where it joins the sea
- 7. an area of land covered with a thick growth of trees
- 8. an area of water smaller than a lake, often artificially made
- 12. a large area of water surrounded by land and not connected to the sea except by rivers or streams:
- 14. a natural wide flow of fresh water across the land into the sea, a lake, or another river
- 15. a tall plant that has a wooden trunk and branches that grow from its upper part
- 17. an area of land that is higher than the surrounding land
Down
- 1. an area of sea water separated from the sea by a reef (a line of rocks and sand)
- 2. a large area of land covered with trees and plants, usually larger than a wood, or the trees and plants themselves
- 4. a raised part of the earth's surface, much larger than a hill, the top of which might be covered in snow
- 5. water that flows naturally along a fixed route formed by a channel cut into rock or ground, usually at ground level
- 9. an area, often covered with sand or rocks, where there is very little rain and not many plants
- 10. an area of low, flat land, sometimes shaped like a triangle, where a river divides into several smaller rivers before flowing into the sea
- 11. a large hole in the side of a hill, cliff, or mountain, or one that is underground
- 13. an area of sand or small stones near the sea or another area of water such as a lake
- 16. a high area of rock with a very steep side, often on a coast