![Top-down-ascending-footage-of-wastewater-tanks.-Cleaning-water-before-returning-to-nature.-Port-Elisabeth,-South-Africa](https://videocdn.cdnpk.net/videos/d01d0614-7188-4118-b01e-8c3b4048b41c/horizontal/thumbnails/small.jpg)
Top down ascending footage of wastewater tanks. Cleaning water before returning to nature. Port Elisabeth, South Africa
1080p 00:09
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