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China: Yunnan completes 11 km long water diversion tunnel
11 kilometers long water diversion tunnel finish.
cover tunnel photo by: Matt Brown from London, England / CC BY
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Copyright 2019-2024 TunnelContact.com
| | 11 kilometers long water diversion tunnel finish.
cover tunnel photo by: Matt Brown from London, England / CC BY
Copyright 2019-2024 TunnelContact.com
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