Across
- 1. : The altitude above which snow remains year-round.
- 3. : An area of low land between mountains.
- 4. : The point above which trees do not grow.
- 8. : A flat, high area of land.
- 9. : The bottom of a mountain.
Down
- 1. : The highest point of a mountain.
- 2. : The side of a mountain.
- 5. : A long, narrow elevated section of land.
- 6. : An area of rising ground leading to a peak.
- 7. : A visible rock formation at the surface.