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Alison Clayton: Grand union canal
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Alison Clayton: brick bridge
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Alison Clayton: benchmark
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Alison Clayton: bridge
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Alison Clayton: geocache
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Alison Clayton: posh canal bridge
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Alison Clayton: Wirey physique
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Alison Clayton: Cosgrove Aqueduct
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Alison Clayton: old disused lock
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Alison Clayton: Horse tunnel