Qingtong Gorge Water Conservancy Project seen from the sky

Drone photos give a full view of the Qingtong Gorge Water Conservancy Project in Qingtong City, Northwest China's Ningxia Hui Autonomous Region, Oct. 24, 2019. Construction work for the project over the Yellow River, China's second longest river, started in August 1958 and was completed in 1967. The project has multiple purposes, which include irrigation, power generation and flood control.

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