Across
- 4. Very high natural elevation of land
- 6. Slow-moving mass of ice
- 10. Maze-like network of paths
- 12. Typical weather of a region
- 14. Natural flowing waterway
- 15. Untamed natural area
- 16. To find and follow a route
- 17. Vast body of salt water
- 18. Large area covered with trees
Down
- 1. Area of high, flat land
- 2. To find something previously unknown
- 3. A long trip or adventure
- 5. Land completely surrounded by water
- 7. Community of living things and their environment
- 8. Structure used to cross water or land
- 9. Type of land surface
- 11. Line where earth and sky appear to meet
- 12. Deep gorge carved by a river
- 13. Living creature that is not a plant
- 14. Able to survive harsh conditions