| 11. | Four districts were created covering the eastern Idaho Snake River plain.
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| 12. | The western part has steeper coasts, while on the east side river plains dominate.
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| 13. | It is the westernmost of the young lava fields accupying the Snake River Plain.
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| 14. | Before the dam was constructed, the village of Les Salles-sur-Verdon occupied the river plain.
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| 15. | Cinder cones dot the landscape of the Snake River Plain.
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| 16. | The nesting ground is a large flat river plain, larger than 3 football fields.
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| 17. | Behind the coastal river plain the Hodgkinson goldfield was proclaimed on 15 June 1876.
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| 18. | This plant grows in the dry cold desert of the western Snake River Plain.
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| 19. | The Snake River Plain lies in a distinct depression.
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| 20. | It is at the centre of a fertile river plain, surrounded by rolling hill country.
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