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Across
- 1. Where a river meets the sea
- 4. Deep gorge carved by a river
- 5. Large volcanic crater
- 7. Natural water source from ground
- 8. Spring that erupts hot water
- 9. Wide flat grassland
Down
- 2. A word related to geography
- 3. Large underground cave
- 5. Bowl-shaped depression
- 6. Treeless Arctic plain