Across
- 3. A large hole that is usually dark inside, can be made of ice or rock.
- 4. An arid extension of land where there is no water.
- 5. A flat area of land surrounded by hills or mountains.
- 6. A formation made of ice and snow that moves very slowly and melts gradually.
- 10. An area covered by mountains (adjective).
Down
- 1. A place where many trees grow.
- 2. An area where running water falls down from a high place.
- 7. A vertical rock formation that is common on coasts.
- 8. An elevation of ground with a hole rough which lava, gases and ash erupt.
- 9. An area of land surrounded by water.