Sand mine from an aerial view. Drone

Frame Rate: 25, Resolution: 3840x2160, Video Encoding: H.264, File Size: 234.97MB, Number of Clips: 1, Total Clip(s) Length: 00:13

Sand quarries from aerial view, Some quarries are long and narrow, while others may be wider and more circular. The depth of the pit may also vary, ranging from a few meters to several dozen meters.

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