Mountains

123456789
Across
  1. 1. Not low land
  2. 3. Highest point of a mountain
  3. 5. Where the Earth's crust meets
  4. 7. The mountain with the highest summit in the world
  5. 8. Relates to structures of Earth's crust
  6. 9. A steep edge
Down
  1. 2. Height
  2. 4. Gigantic, rocky, hill
  3. 6. Study of rocks