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difficult:area,
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accessible:area,
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remote:area,
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climatic:condition,
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isolated:unit,
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favorite:place,
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vulnerable:area,
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natural:area,
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sensitive:region,
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spatial:unit,
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marginal:environment,
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remote:region,
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fragile:environment,
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difficult:environment,
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natural:experience,
Category Nuances for mountain_area:
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marginal,
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remote,
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fragile,
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accessible,
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natural,
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difficult,
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isolated,
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sensitive,
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spatial,
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vulnerable,
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climatic,
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favorite,
Simple Categories for mountain_area: